Sous vide can feel like a revelation when you first try it. By cooking food at a precise temperature in a water bath, you gain a level of control that traditional methods can’t match. Meats come out perfectly cooked from edge to edge, seafood stays tender and delicate, and even vegetables benefit from the consistency and flavor development that sous vide provides.

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Getting Started

Getting started with sous vide is easier than many people expect. At its core, the technique just requires sealing ingredients in a bag and cooking them in a temperature-controlled water bath until they reach the desired doneness.

To try it yourself, you’ll need a few basics like an immersion circulator, bags, and a container for the water bath. You can find a full overview of the tools in our sous vide equipment guide.  

Take a look at our sous vide techniques and recipes below to get started on your own culinary adventure.

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Techniques

Why Sous Vide?

Sous vide cooking offers a level of control that no other cooking method can match. It can produce results that are difficult to achieve by traditional means, especially if you’re a home cook. Chefs turn to sous vide when they want to cook food perfectly and repeatedly, with no risk of over- or undercooking. It’s one of the best tools we have for precise temperature control—and precise temperature control is one of the most powerful tools in the kitchen. It’s the defining feature of this technique. Get the full breakdown here.

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Strategies for Cooking Sous Vide

One of the most appealing things about sous vide is the flexibility that it gives you to deal with a wide range of culinary situations. In this blog, we’ll walk through two foundational approaches to cooking sous vide (equilibrium cooking and hold-at-temperature cooking) and explain when and why to use each. You’ll also learn best practices for cooking from frozen, reheating leftovers, and avoiding common mistakes like overcooking or using overly high bath temperatures. Whether you’re after perfect texture, better timing, or safer cooking, this blog will help you fine-tune your technique and build confidence with sous vide.

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Blanching and Searing for Sous Vide

Sous vide cooking produces precise, consistent, and delicious results. But what comes out of the bag doesn’t always look the best. Grayish meat, pale vegetables, or limp fish can all be visually underwhelming. Thankfully, there’s an easy way to bridge the gap between precision cooking and mouthwatering presentation: blanching and searing. These traditional techniques not only enhance appearance but also improve texture, flavor, and food safety.

In this blog, we’ll dive into how and when to use each technique and how they complement sous vide cooking beautifully.

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Sous Vide Packaging

Sous vide cooking has become almost inseparable from vacuum sealing. Learn what equipment we recommend and what to do if you encounter problems sealing your food.

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Sous Vide and Confit

Though you can cook confit with pressure-cooking and added fat, the easiest way to prepare a modern meat confit is sous vide. It provides a clean, reliable way to cook the meat, and the snug-fitting bag keeps the fat close to the surface of the meat as it cools after cooking. The largest difference is that confit cooked sous vide is cooked without oil—which means you don’t need a cauldron of fat for this method. Learn more about this method here.

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Sous Vide Recipes

Sous Vide Salmon in the Kitchen Sink

Don’t have any sous vide equipment yet? No problem—you can try this method right in your kitchen sink! While sous vide gear is much more affordable than it used to be, it’s still worth testing the technique first to see if it’s something you’ll enjoy before investing in the equipment. If you already own an immersion circulator, this recipe works just as well. Simply follow the same instructions using your standard water bath setup.

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Potato Puree

This sous vide potato puree method creates exceptionally silky, fluffy mashed potatoes by first heat-treating the potatoes before boiling. The potatoes are cooked sous vide for 35 minutes, chilled to stabilize the starch, then boiled until tender and passed through a ricer or food mill before being enriched with butter. This process gelatinizes and stabilizes the starch so the puree stays smooth instead of turning gummy.

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Dairy-Free Potato Puree

This recipe is very similar to the one above but takes a Modernist approach to achieving perfectly smooth potato puree without relying on heavy cream or butter. The potatoes are cooked sous vide, allowing for gentle, precise cooking that preserves their natural flavor and texture.

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72-Hour Braised Short Ribs

Collagen acts like a network of strong fibers that hold meat together, but with the right combination of heat and time it breaks down into rich, flavorful juices. This recipe for 72-hour braised short ribs transforms tough collagen into tender, silky gelatin. Cooking the ribs at low temperatures (such as with sous vide) prevents the collagen from contracting too quickly, which helps the meat retain more moisture. The extended cooking time allows the collagen to fully dissolve, resulting in exceptionally tender, succulent short ribs.

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Sous Vide Turkey Breast Recipe

Roast chicken or turkey is beloved for its crispy skin and juicy meat but achieving both at once can be tricky. Roasting at high heat crisps the skin but often dries out the breast, especially with larger birds like turkey. While brining helps keep the meat moist, it usually prevents the skin from crisping properly. Our favorite solution to this problem is injecting the brine directly into the breast meat, boosting moisture and flavor without soaking the skin. This technique helps deliver juicy meat while still allowing the exterior to crisp beautifully. In this recipe, we inject milk and apple juice to infuse the meat with phosphates, increasing tenderness when cooked.

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Sous Vide Hollandaise

This modern hollandaise recipe uses sous vide to make the classic butter-and-egg sauce far more reliable and stress-free. By gently cooking the eggs at a precise temperature, the sauce avoids the common pitfalls of curdling or separating while maintaining a perfectly smooth texture. The mixture can then be finished and optionally aerated in a whipping siphon for a light, elegant consistency. Cooking sous vide also means the sauce can be prepared ahead of time instead of rushed at the last minute.

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Sous Vide Rare Beef Jus

This rare beef jus uses sous vide cooking to create a broth that is both intensely flavorful and beautifully bright in color. By cooking finely cubed beef at a precise low temperature, the meat releases its juices while remaining rare, producing a cleaner, fresher-tasting jus than traditional browned versions. The cubes are carefully sized to maximize extraction without causing the proteins to seize and trap the liquid. After cooking, the juices can be strained or pressed—and optionally refined further using a centrifuge—to separate the fat and clarify the broth. The result is a delicate yet deeply beefy jus that pairs perfectly with vegetables, rare beef, or refined modern dishes.

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Fish Brine

This modern fish brine uses a carefully balanced salt solution to season fish evenly while helping it retain moisture during cooking. Unlike heavy salting or curing, the gentle brine allows salt to slowly diffuse into the fish until it reaches an ideal concentration throughout the flesh. This technique, often paired with sous vide cooking, enhances flavor, firms the texture, and preserves the fish’s delicate color. By using a low salt concentration over a longer soak, the risk of oversalting is minimized. The result is tender, well-seasoned fish that cooks beautifully and maintains its natural appearance.

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Shrimp and Grits

This modern take on shrimp and grits celebrates the dish’s Southern roots while incorporating precise cooking techniques for deeper flavor and better texture. Stone-ground grits are cooked with rich crustacean stock to intensify their savory character, creating a comforting and flavorful base. Sous vide plays a key role by producing delicately soft eggs with perfectly creamy yolks that melt into the warm grits. The dish can also be finished with prawns that are seared or cooked sous vide for tender, evenly cooked seafood.

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Lamb, Slow-Baked Onion, and Pistachio Puree

This spring-inspired lamb dish elevates a tradition recipe with sous vide precision. Cooked for 18 hours at a controlled low temperature, the sous vide method ensures the meat retains moisture while developing rich flavor. Aromatics like thyme, garlic, and olive oil enhance the natural taste of the lamb without overpowering it. The lamb is plated alongside a slow-baked onion and pistachio puree.

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Lamb Skewers with Mint Yogurt

These lamb skewers get a Modernist upgrade by cooking the meat sous vide to a precise, perfect temperature before skewering. The sous vide method ensures the lamb is evenly cooked, tender, and juicy, while allowing the skewers to be prepared in advance and safely refrigerated. When ready to serve, the vacuum-sealed lamb is gently reheated in a 55 °C water bath, preserving its texture and flavor. After reheating, the cubes are quickly seared, grilled, or torched to develop a flavorful exterior without overcooking the interior.

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Hanukkah Short Ribs

This holiday beef recipe uses sous vide to guarantee tender, juicy short ribs or brisket every time. By cooking the meat at a precise low temperature for an extended period, the connective tissue breaks down perfectly without overcooking, leaving the beef fork-tender and flavorful. Sous vide also frees up oven space, making holiday prep less stressful. The result is a succulent, evenly cooked dish that pairs beautifully with sides like latkes or a rich jus.

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Starch-Infused Fries

These starch-infused French fries combine sous vide cooking with Modernist techniques for an ultra-crispy exterior and silky, fluffy interior. The potatoes are first cooked sous vide to a precise tenderness, ensuring even doneness throughout before any frying occurs. Vacuum sealing allows starch to be infused back into the potatoes, while an optional ultrasonic bath creates tiny fissures on the surface that enhance crispiness when deep-fried. This approach keeps the fries perfectly crispy for longer and produces a light, delicate interior that contrasts beautifully with the crunchy exterior.

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Thanksgiving Stew

Our Thanksgiving Stew recipe cooks turkey sous vide, which allows the turkey to retain its moisture. Complemented by cranberry consommé, stuffing puree, and pressure-cooked root vegetables, the dish layers traditional tastes in a Modernist presentation.

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Chorizo French Toast

This Chorizo French Toast uses a vacuum-infusion technique to flavor the brioche with chorizo-infused custard, creating a rich and savory base. By vacuum-sealing the brioche, the milk and chorizo mixture is absorbed quickly and evenly, far beyond what traditional soaking achieves. Quail eggs top the rounds, adding perfectly sized portions that complement the custard-soaked bread.

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Striped Mushroom Omelet

In this recipe, we use sous vide to gently cook the eggs ahead of time, ensuring a tender, creamy texture in both the omelet base and the siphoned scrambled egg filling. Mushroom puree is striped on the cooking surface, creating dramatic visual layers that cook evenly when the egg mixture is poured over. Holding the eggs at 55 °C for two hours pasteurizes them without overcooking, allowing for safe advance preparation and consistent results. The finished omelet is finished with mushroom marmalade and fine herbs, balancing earthy flavors with silky eggs, to create something both delicious and artistic.

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Discover More in the Modernist Cuisine Series!

Sous Vide in Modernist Cuisine at Home

Our award-winning, 456-page volume cookbook, Modernist Cuisine at Home, takes a deep dive into sous vide cooking, with an entire chapter dedicated to this versatile technique and more than 40 recipes to help you put it into practice. It is the perfect resource for passionate and curious home cooks, supporting your ability to master Modernist techniques and make hundreds of stunning recipes.

Our collection of sous vide recipes goes far beyond the basics, from lobster rolls and hamburgers to flavorful stocks that capture the nuanced flavors of vegetables, onion fluid gels, turkey confit, herb oils, and so much more. Whether you’re new to sous vide or looking to take your skills further, Modernist Cuisine at Home offers the techniques, recipes, and inspiration to get you started.

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Sous Vide in Modernist Cuisine

Take sous vide to the next level with Modernist Cuisine: The Art and Science of Cooking. This groundbreaking and award-winning six-volume set explores the science, technique, and technology behind modern cooking, with more than 90 recipes that incorporate sous vide.

From elevated classics like Blanquette de Veau, Pot-au-Feu, Fish and Chips, and Choucroute Garnie to inventive preparations like Cauliflower Crème Anglaise, Flourless Gnocchi, Sauce Maltaise, and XO Sauce, these recipes showcase just how versatile sous vide can be. And that barely scratches the surface.

Whether you’re a passionate home cook, culinary professional, or simply someone who loves pushing the boundaries of cooking, Modernist Cuisine offers an unparalleled look at what’s possible with sous vide and the science behind it.

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Sous Vide in Modernist Pizza

You might be surprised to learn that we use sous vide in Modernist Pizza. While it isn’t featured as heavily as it is in Modernist Cuisine at Home or Modernist Cuisine, we rely on the technique for several sauces and toppings, particularly meats and clams.

You’ll find sous vide used to prepare the sabayon sauce for the Manila clams on our Modernist New Haven Pizza, as well as the gyro meat for our Kebab Pizza. One popular application, however, is the Egg Yolk Sauce, found on page 272 of Volume 2 of Modernist Pizza.

For this sauce, the egg yolks are cooked in a 67°C water bath until just set. It’s important not to let them get any hotter: higher temperatures cause the yolks to firm up and lose the creamy, smooth texture we’re after. That precision is exactly why sous vide is such a useful technique for this sauce.

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Fruits and vegetables may seem like simple ingredients, but a closer look reveals a long history of adaptation and survival. Many plants naturally protect themselves with bitter flavors, toxic compounds, tough fibers, or even physical barriers like spikes—defenses meant to deter animals from eating them. Fruits are a notable exception: They evolved to be sweet and appealing so that animals would help spread their seeds.

In contrast, most vegetables, grains, and starches require some form of processing—such as cooking, fermenting, or pickling—to become safe, digestible, and tasty. Over thousands of years, humans have used chemistry and selective breeding to tame these plant defenses, transforming once-wild plants into the diverse, flavorful, and often safer crops we enjoy today.

In this post, we’ll focus on why we cook vegetables and understanding more about the plants we eat.

Before you get started, be sure to subscribe to our newsletter so you never miss a new recipe, technique, or insight.

Why We Cook Vegetables

While raw food has been praised by some as the healthiest way to eat, our bodies tell a different story. Unlike animals, the human digestive system isn’t well-equipped to extract enough nutrition from an all-raw diet. In fact, cooking plays a crucial role in making nutrients more accessible—so much so that some scientists believe it was key to human evolution. Far from being unnatural, cooking is an act that sets us apart from other animals.

When we cook vegetables, we’re often working against the natural defenses that plants evolved to survive. Some, like kidney beans, contain toxins that can cause illness unless neutralized by heat. Others, like cassava and almonds, contain cyanide for the same reason: to prevent their seeds from being eaten and digested.

Plants have strong physical defenses too. Unlike animals, which have bones or shells for support, plants build strength at the cellular level. Each plant cell is encased in a rigid wall made of cellulose and glued to its neighbors by pectin and hemicellulose. Cooking softens vegetables by breaking down these glues, making them easier to chew and more pleasant to eat—even though we still can’t fully digest the cell walls, which become dietary fiber.

While some plants, like lettuce and tomatoes, are soft enough to eat raw, many are better cooked—not just for texture but also for nutrition. In many cases, cooking plants makes them not only more enjoyable but also better for us. Carrots, for instance, release far more beta-carotene when cooked and pureed with oil than when eaten raw. Spinach, too, becomes more nutritious when cooked, as heat reduces its oxalate content, which otherwise blocks mineral absorption.

Understanding Plant Structure 

Plants are made up of water, starch, and enzymes. Knowing these elements and understanding how to adjust accordingly can really improve your results.

Water plays a crucial and complex role in how vegetables cook. Most vegetables contain a surprising amount of water—often more than we realize—and that internal moisture becomes a powerful tool in breaking down the tough cell walls that give plants their structure. For example, lettuce is 98% water, carrots 88%. When heat is applied, water begins to leak out of the cells, dissolving the pectin and hemicellulose that bind them together. For many vegetables, no additional water is needed—just heat will do the trick. Though this internal water makes vegetables soft and sweet when properly cooked, it can also cause problems.

For instance, sautéing leafy greens often turns into accidental stewing as water floods the pan. If you encounter this problem, try stir-frying in a super-hot wok that can convert the water to steam instantly.

Another thing to consider while cooking plants is starch. Starch is the main way plants store energy, just as fat stores energy in animals. Found as tiny granules inside plant cells, starch behaves in different ways depending on the plant, and even the variety.

These differences explain why some potatoes make great fries, while others are better for salads. For example, floury potatoes (like russets) are packed with starch granules that absorb water quickly and separate easily, resulting in fluffy textures—ideal for mashed potatoes or fries. But waxy potatoes (like La Rattes) hold their shape because their cells cling together. They resist crumbling, which makes them perfect for gratins or potato salads.

Enzymes are proteins that drive chemical reactions in plants, affecting ripening, browning, and spoilage. When fruit is bruised or cut, enzymes called polyphenol oxidases mix with oxygen and trigger browning—a natural defense against microbes and insects. While useful to the plant, this reaction is often undesirable in the kitchen. You can slow or prevent it by:

• Reducing oxygen exposure (such as through airtight containers or vacuum sealing)
• Lowering pH with lemon juice
• Briefly cooking (blanching) to deactivate enzymes

Heat is a powerful tool for both stopping and activating enzymes:

• To preserve flavor and color: Blanch vegetables (like peas) right after harvest to stop enzymes from converting sugars to starch.
• To ripen fruit: Gentle heat can activate enzymes that turn starch into sugar and release aroma compounds—especially in climacteric fruits like bananas or avocados.

Not all fruits respond the same way:

• Tropical fruits need higher temperatures to deactivate enzymes.
• Non-climacteric fruits (e.g., grapes, pineapples) won’t ripen once picked, regardless of heat.
• Low-temp treatments (around 40 °C / 104 °F) can delay spoilage in lettuce or carrots by reducing enzyme activity.

Principles of Cooking Vegetables

Cooking vegetables is generally more forgiving than cooking meat.

Animal proteins require precise temperatures—just a few degrees too hot can dry them out. Vegetables, by contrast, tolerate a broader range of temperatures, and cooking them isn’t solely about heat. Any method that disrupts the molecular “glue” holding plant cells together—whether chopping, pureeing, fermenting, or cooking—can make vegetables tender.

In fact, humans often prepare vegetables in ways similar to grazing animals, who chew, mash, and rely on microbes to break down plant cell walls. Our unique advantage, however, is our ability to use heat with intention. Between 88 °C and 92 °C / 190 °F and 198 °F, the pectin and hemicellulose between plant cells begin to dissolve, allowing vegetables to soften. Water leaks out of juicy produce or into starches like rice, and structures like spinach leaves wilt while carrots move from crisp to mush. Heat works even faster in a pressure cooker.

But heat comes with a trade-off: It can damage flavor for certain produce. Delicate vegetables like corn or peas lose their peak taste if overheated. Successful vegetable cookery, then, is about balancing tenderness with flavor—choosing a method and temperature that brings out the best in both depending on the plant you are working with.

Tips to Take Home

Here are two easy takeaways from this lesson to put into practice now:

• Leafy greens often stew instead of sauté because they release water into the pan. Try stir-frying them in a super-hot wok to instantly convert that water to steam and keep them crisp.
• Use starchy russets for fluffy mashed potatoes or crispy fries. For gratins and potato salads, go with waxy varieties like La Rattes for better texture and shape retention.

Now that you better understand how plants work, check out some more of our favorite techniques to make the most out of that produce you love, including pressure-cooking, sous vide, and more.

FURTHER READING

• Using Juicers—Modernist Cuisine at Home, p. 20
• Foraged Foods—Modernist Cuisine at Home, p. 78
• Unusual Fruits and Vegetables—Modernist Cuisine at Home, p. 76
• Plant as Food—Modernist Cuisine at Home, p. 262

We’ve all heard the phrase “oil and water don’t mix.” It’s true—and it comes down to basic chemistry. Water molecules are polar, meaning they have slight electrical charges that attract one another. Oil molecules are nonpolar and hydrophobic (literally, “afraid of water”), so they repel water molecules rather than blend with them.

But in cooking, we’ve found ways to make these opposites coexist. The result of these coexisting opposites are emulsions—a creamy, stable mixture of two otherwise incompatible liquids. Think of mayonnaise, hollandaise, vinaigrettes, or even milk. These mixtures don’t blend on their own; they’re mechanically and chemically stabilized to keep their smooth texture. However, emulsions are metastable: they’ll eventually separate back into oil and water unless you take the right steps to hold them together.

How Emulsifications Work

Creating an emulsion is more than just mixing. It’s about breaking one liquid (like oil) into tiny droplets and dispersing them evenly through another (like water). The phase that forms the base of the mixture is the continuous phase, while the dispersed droplets make up the dispersed phase.

There are two main types of emulsions:

• Oil in water (O/W)—Oil is suspended in water. Examples include milk, cream, and mayonnaise.
• Water in oil (W/O)—Water is suspended in oil. Classic examples include butter and margarine.

Emulsifiers/stabilizers are the unsung heroes that hold these emulsions together. They are ingredients that stabilize the interface between oil and water, preventing the droplets from coalescing. Egg yolks, casein proteins (a kind of milk protein), and modern surfactants are all emulsifiers that perform this function—often in very different ways, which you can learn more about in Modernist Cuisine Vol. 4:202.

Emulsions are everywhere, even in foods we might not immediately recognize as such. Here are a few everyday examples you may not have considered:

• Chocolate uses lecithin, casein (from milk powder), or polyglycerol polyricinoleate as stabilizers
• Mountain Dew (and other sodas) uses gum arabic as an emulsifier to keep flavor and colorings evenly distributed (these are considered nanoemulsions)
• Ice cream is a complex emulsion and foam stabilized by dairy proteins, lecithin from egg yolks, and semisolid droplets of fat that trap air bubbles
• Hot dogs are held together by myosin protein from meat

Methods of Emulsifying

At its core, emulsification is about breaking down one liquid into microscopic droplets and blending it with another. This blending can be done in several ways:

• Whisking or stirring—Works well for small-scale emulsions like vinaigrettes.
• Blending—A high-speed blender or immersion blender can create smaller droplets and a more stable emulsion. Hand blenders tend to do well with beurre blanc and hollandaise, while the household blender is better for mayonnaise and vinaigrettes.
• Homogenizing—We love a countertop rotor-stator homogenizer for making fine emulsions that are incredibly stable, but they are best for existing emulsions. Unless you have a high-volume use for them, it is difficult to justify their steep cost at home.

While mechanical force can start the process, it’s the presence of an emulsifier that keeps the emulsion stable. Thickeners like xanthan gum or starches can also help by increasing viscosity, making it harder for droplets to move and combine.

Understanding Emulsifiers 

A wide variety of surfactants and stabilizers makes it easier to produce stable emulsions. The names of these ingredients might be new to you; most of them are no more or less processed than salt, baking soda, and other more common ingredients. Many are derived from natural sources such as seaweed and starch or animal collagen, and can be purchased online from specialty shops like ModernistPantry.com—or found in stores if you’re looking for more common options like xanthan gum or gelatin. You can familiarize yourself with some different emulsifiers below.

• Agar is a seaweed-derived gelling agent often used in products like olive oil margarine. It performs well in emulsions of varying viscosities.
• Carrageenan is another seaweed-based option, which is best used in cold dairy applications, such as American cheese slices. It offers stability without the need for heat.
• Gelatin, made from animal collagen, can only be used in cold preparations and is commonly seen in desserts like Jell-O or in whipped creations like Chantilly cream.
• Gellan gum works best in nonacidic solutions and creates a stable, appealing texture even in thick emulsions, such as a beef suet mousseline.
• Guar gum, made from legumes and pregelatinized starch, often derived from corn or potatoes, can both be used to stabilize emulsions like hazelnut cream or margarine.
• Sodium alginate, another seaweed derivative, excels in dairy-based emulsions and is used in products like emulsified sausage, but it can impart a strong flavor if overused.
• Xanthan gum, produced through fermentation, is one of the most effective and versatile thickening agents—ideal for making mayonnaise—but, like some others, may result in a slimy or gummy texture when used in excess.

With so many emulsifiers available, choosing the right one depends on your desired texture, temperature conditions, and flavor profile. Once you get familiar with their properties, they can become powerful tools in your Modernist kitchen.

Dairy Emulsions

Milk, itself an emulsion straight from the cow, is the foundation of all dairy-based emulsions. Butterfat (also called milkfat) is suspended in water, and the emulsion is stabilized by casein protein. But it is not stable for long because it is prone to a type of emulsion failure named creaming, for the resulting cream that rises to the top of the milk. But with the application of powerful modern tools and ingredients, dairy emulsions can now exist in environments not formerly possible. Beurre blanc, a delicate and fussy sauce, used to require à la minute preparation. With an emulsifier, it can be made well in advance and held in a water bath, or even chilled and reheated if necessary.

Compound butters often are used as a flavorful finish on grilled steaks or fish fillets, but they fail, or break, on contact with hot food. In contrast, our Montpellier butter melts into a luscious, fully emulsified butter sauce (find the recipe in Modernist Cuisine at Home, p. 120 / Modernist Cuisine Vol. 4:219).

We also love the consistency of melted processed cheese—but dread the flavor. By creating a stable cheese emulsion from tasty varieties like Gruyère and white cheddar, we are able to marry taste to texture for the perfect cheeseburger topping as well as create incredible mac and cheese.

We use sodium citrate (an emulsifying salt) to make our Perfectly Melting Cheese Slice, enabling any cheese slice to melt as perfectly as American cheese does. This recipe can be found on page 317 of Modernist Cuisine at Home and in Modernist Cuisine Vol. 4:224.

One of our most popular recipes of all time is our Mac and Cheese, which also uses sodium citrate to create a texture as smooth as American cheese but as complex and intense in flavor as any of your favorite cheeses. Try the recipe for yourself!

How Emulsions Fail

No matter how precisely an emulsion is made—even with a high-pressure homogenizer—it is never truly permanent. Given enough time, every emulsion will eventually separate, sometimes quickly (as anyone who’s wrestled with splitting mayonnaise knows).

Emulsions can fail in several distinct ways:

• The droplets may remerge as they bump into each other and form larger ones, leading to creaming in oil-in-water (O/W) emulsions and sedimentation in water-in-oil (W/O) emulsions.
• Weak or insufficient emulsifiers may allow droplets to clump back together.
• Excessive agitation can destabilize the emulsion after it’s formed.
• Temperature shifts—especially heating or sudden cooling—can alter texture and cause breakage, as seen when a sauce that looks perfect off the heat falls apart when reheated or placed on a hot surface.
• Time itself eventually causes all emulsions to break down.

Most emulsions fail due to a combination of these forces, each compounding the others, though in some cases—such as clarifying stocks or producing nonfat milk—breakage is the desired outcome. In general, emulsions begin to break when heated beyond 70 °C / 158 °F, though exceptions exist.

Other Emulsion Highlights

Modernist Cuisine at Home dives into many recipes for emulsions, but one of our favorites is jus gras—a rich meaty sauce made by emulsifying savory jus with rendered fats, like chicken fat or fish oil. Try a simplified version here, or find the full recipe on page 93.

Oil-and-water emulsions like vinaigrettes are trickier without eggs or dairy. Whisking oil and vinegar with mustard or garlic can work, but it often separates quickly. Blending creates smaller droplets and helps it last longer. Add an emulsifier and the emulsion holds even better—see our Modernist Vinaigrette on page 117.

Emulsions may be rooted in complex chemistry and physics, but their impact in the kitchen is simple: luscious sauces, creamy textures, and dynamic flavor combinations. Whether you’re whisking a vinaigrette or using a homogenizer to create a silky foam, emulsions are a powerful tool in any cook’s repertoire. With a little experimentation—and the right emulsifier—you can master the delicate art of oil and water.

FURTHER READING

• Montpellier Butter—Modernist Cuisine at Home, p. 120 / Modernist Cuisine Vol. 4:219
• Perfectly Melting Cheese Slice—Modernist Cuisine at Home, p. 317 / Modernist Cuisine Vol. 4:224
• Silky Smooth Macaroni and Cheese—Modernist Cuisine
• “Fat Free” Mac and Cheese—Modernist Cuisine at Home, p. 315
• Egg Emulsions—Modernist Cuisine Vol. 4:226
• Mayonnaise—Modernist Cuisine at Home, p. 108 / Modernist Cuisine Vol. 4:226
• Sous Vide Hollandaise—Modernist Cuisine
• Home Jus Gras—Modernist Cuisine at Home, p. 93 / Modernist Cuisine Vol. 4:237
• Simplified Jus Gras—Modernist Cuisine
• Modernist Vinaigrette—Modernist Cuisine at Home, p. 117 / Modernist Cuisine Vol. 4:231

At its core, a foam is simply a collection of gas bubbles trapped in a liquid or semisolid. When it comes to food, foams are a creative way for cooks to enhance the textures and flavors of dishes. But not all foams are created equal. Their texture, stability, and taste depend on how those bubbles are formed, what gas is used, and what kind of liquid they’re suspended in. 

Whisks, Blenders, and Whipping Siphons

The classic tool for making a foam is the humble whisk. As you whip a liquid, the wires pull in air and create bubbles. The more wires, the more air gets incorporated. Whisks also shear the liquid—breaking larger bubbles into smaller ones, which creates a finer texture and a more stable foam.

While whisks work wonders, other tools are hit-or-miss. A countertop blender, for example, isn’t great at making foams because its blades sit at the bottom of the container, where there’s no air to work into the liquid. Unless you find a way to blow air in at the same time (which is not easy), it won’t give you the fluffy result you’re after.

Immersion blenders, however, are a different story. Because you control how deep the blade goes, you can hold it near the surface to suck in air and create bubbles. Swap out the cutting blade for a flat disc attachment and you’ll get even better foaming results.

One of the best tools for making foams is the whipping siphon. These use gas cartridges—usually filled with nitrous oxide—to force gas into a liquid, creating a stable foam with a beautiful texture. They’re especially great for cream-based foams, thanks to how well nitrous oxide dissolves in fat.

Foams Made with Steam, CO2, and N2O

Air is the most common gas used in foams because it’s free and easy to access. But it has one drawback: oxygen can oxidize food and cause spoilage. That’s why nitrogen is often used in packaged baked goods—it’s inert and won’t affect flavor or shelf life.

Steam is another surprisingly common foaming gas. When water turns into steam, it expands by a factor of 1,700. Foods like puffed snacks, chicharrones, prawn crackers, and puffed potato chips all rely on this effect. In each case, residual water inside a gel or dough suddenly vaporizes during frying, puffing up the food into a crisp, airy foam.

Even in baking, steam plays an important role. Bubbles created by air, yeast, or baking powder expand further as the batter or dough heats and releases water vapor. This helps set the final texture of breads, muffins, and meringues.

Carbon dioxide is another common foaming gas, especially in baked goods. Yeast and chemical leaveners produce CO₂ that inflates bubbles before the structure sets. You’ll also find CO₂ in fizzy beverages like beer and soda. In beer, the gas comes out of solution when the pressure drops, creating foam. Most beers contain natural or added foaming agents that help trap the gas and create that satisfying head.

But we consider nitrous oxide to be the go-to gas for whipping siphons. It dissolves easily in both water and fat, doesn’t oxidize food, and even helps prevent bacterial growth. One charger typically holds about 8 grams of gas—enough for a small batch of foam. Because cream is high in fat, it’s especially easy to foam with N₂O, which is why whipped cream dispensers work so well.

If you’re experimenting with a whipping siphon, you might need multiple chargers, depending on your recipe. The key is to chill your mixture and shake the siphon well to help the gas dissolve before dispensing.

Ways to Incorporate Foams into Your Dishes

Foams are a playful, visually striking way to add new textures and layers of flavor to your food. They can transform familiar ingredients into something unexpected. In Modernist Cuisine at Home, we share several creative ways to use foams to enhance both sweet and savory dishes.

For example, try the Refried Bean Foam shown above (p. 223). This twist on a Mexican classic uses pressure-cooked beans and a whipping siphon to create a creamy, cloudlike foam that melts in your mouth. It’s best served right away, as the foam holds for about 10 minutes.

We also have a Strawberry Juice with Green Apple Foam recipe (p. 161), where tart green apple adds a bright, effervescent contrast to the sweet juice.

Seafood lovers will appreciate Clams in Chowder Sauce (p. 292), a lighter, modern take on chowder. The warm sauce is made foamy using whey protein isolate, adding a rich but airy texture to the dish.

Whether you’re looking to elevate the texture of a dish, add a new visual element, or surprise your guests, foams are a fun and approachable way to modernize your cooking.

FURTHER READING

• Forming Foams with Eggs—Modernist Cuisine Vol. 4:247, 251, 255
• Strawberry Juice with Green Apple Foam—Modernist Cuisine at Home, p. 161
• Refried Bean Foam—Modernist Cuisine at Home, p. 223
• Clams in Chowder Sauce—Modernist Cuisine at Home, p. 292

When you set a pot on the stove or slide a tray into the oven, you’re engaging in a complex and often inefficient dance of energy transfer. Heat is at the heart of cooking, but how it moves—and how much of it reaches your food—is more complicated than it seems. The science of heat in cooking reveals surprising inefficiencies, hidden variables, and even a bit of math that can change the way you think about your kitchen.

There are three main ways heat moves: conduction, convection, and radiation.

Before you get started, be sure to subscribe to our newsletter so you never miss a new recipe, technique, or insight.

Conduction: Heat by Contact

Conduction is the transfer of energy through direct contact. It’s how a frying pan sears a steak or a burner heats the bottom of a pot. The heat travels from particle to particle, working its way from the outer layers toward the center of the food. But not all materials conduct heat equally. That’s why oven mitts protect your hands—they’re made of materials with low thermal conductivity. Metals, on the other hand, are excellent conductors. However, conductivity is just one part of the equation.

To really understand how cookware conducts heat, you also need to think about specific heat capacity (how much energy a material can store) and density (how heavy it is). The combination of these three properties—conductivity, heat capacity, and density—determines a material’s thermal diffusivity, or how quickly it transmits heat.

That’s why aluminum pans heat quickly (low density, high specific heat capacity), while cast iron pans heat slowly but retain and distribute heat evenly (high density, low specific heat capacity). Copper cookware strikes a balance and is prized for its high diffusivity.

Cooks often obsess over whether their pans are copper, aluminum, or stainless steel—but the thickness of the cookware also matters. A pan that’s too thin may heat quickly, but it can also transmit the burner’s hot and cold spots directly to the food. A thicker base gives the heat time to spread sideways as well as upward, smoothing out those inconsistencies.

The theoretically perfect pan responds quickly to changes in burner temperature but retains enough heat to cook steadily. It’s a tricky balance, and not one manufacturers always make easy to understand. We go into further detail about how to pick an affordable but workable pan in this blog.

While cookware performance matters, food itself is what slows things down. The cells and water content in food create a structure that resists the flow of heat. That’s why it takes time for heat to reach the center of a thick steak or a loaf of bread. Geometry plays a big role here: not just how big something is, but how thick it is relative to its other dimensions.

Here’s where it gets interesting: if you double the thickness of a food item, it doesn’t just take twice as long to cook—it takes four times as long. That’s because conduction follows a square law relationship. Triple the thickness, and you’ll need nine times the cooking time.

This rule works best for flat items like steaks or fillets. Once you get into cube-shaped foods or cylinders like sausages, the math gets murky and simulations are needed. When in doubt, go slow and use a thermometer.

EXAMPLE: Sautéing and Conduction

Sautéing is a great example of conduction, considering a great sauté depends on fast, even heat conduction. The goal is to cook food quickly—getting heat from the pan to the surface of each piece and then into the center before anything burns. Because heat moves more slowly inside food than across its surface, small, uniformly cut pieces are essential. They not only cook faster but also brown more evenly, which is critical for flavor and texture.

Oil plays a key role in this process. Even in a nonstick pan, food touches the surface in only a few spots, with air gaps insulating the rest. A generous layer of oil fills those gaps and conducts heat far more effectively than air. It also coats the food as you toss it, helping every side get exposed to the pan’s heat. If you don’t use enough oil, the food may stick or cook unevenly—some parts burning while others stay raw.

As food cooks, it releases water. If the pan is overcrowded or the burner too weak, those juices pool, cooling the pan and halting browning. Instead, leave space in the pan, use strong heat, and listen closely. The initial loud sizzle signals good heat conduction and rapid evaporation. As the food dries out, the sizzle softens and rich aromas emerge—your cue to pay attention. A quick toss keeps everything moving through the hot oil, ensuring each piece cooks evenly and absorbs the full benefit of conduction.

Convection: Heat by Transfer

Convection is the transfer of heat through a fluid—in cooking, this means either air or liquid. For example, when food is boiled or simmered in water, convection currents form as hotter water rises and cooler water sinks, circulating heat throughout the pot. The same principle applies in ovens: hot air moves around the food, transferring heat to its surface. Convection can be further enhanced by fans in convection ovens, which create a more even and often faster cooking environment. Convection is particularly effective for increasing the speed of cooking compared to relying on conduction alone.

EXAMPLE: Boiling and Baking

Boiling is an excellent example of convection cooking—where heat is transferred through the movement of a fluid, in this case, water. As water reaches a rolling boil (100 °C / 212 °F at sea level), it churns vigorously, creating a turbulent bath that moves hot liquid around the food. This motion accelerates heat transfer, cooking items like vegetables or eggs quickly and evenly. The energetic bubbling also bursts tiny air pockets in plant tissues, enhancing color and texture—as seen when green beans shift from dull to vivid green. Though often maligned for overcooking, boiling, when used properly, is fast, efficient, and ideal for blanching vegetables and cooking pasta and potatoes.

Baking is a quintessential example of convection cooking through air, where hot air currents inside the oven transfer heat to the food. As a loaf of bread bakes, the oven’s preheated air circulates around the dough, carrying thermal energy to its surface. The surface of the loaf heats up first, undergoing a rapid temperature rise during the settling period. At this stage, the air’s warmth causes moisture at the surface of the dough to evaporate, drying it out while also increasing the humidity inside the oven.

Convection doesn’t stop at the surface. As evaporation continues, internal moisture migrates outward to replenish what’s lost, propelled by diffusion and capillary action. Meanwhile, the hot, dry air steadily penetrates the loaf, gradually cooking its interior and triggering the expansion of gases that give bread its rise. By the time the loaf reaches the falling-rate period, a crisp crust has formed, created by the continued exposure to dry, moving air and the slowing of internal moisture movement. In this way, baking harnesses the power of convection through air—not just to heat food, but to transform its texture, structure, and flavor.

Heat by Electromagnetic Waves

Radiation, by contrast, transfers energy without the need for direct contact or a circulating fluid. It occurs when electromagnetic waves carry energy from a heat source to the food. Every heat source radiates light—but that light isn’t always the visible kind. The wavelengths of light used to cook food are mostly in the microwave and infrared range, longer than the longest wavelengths of visible red light. Broilers, toasters, and even glowing charcoal primarily cook food through radiation, which is also called radiant heat. Both visible and infrared radiation radiates from the heating elements or glowing coals.

Unlike convection or conduction, radiation heats the surface of the food directly, often resulting in faster browning or charring. This kind of energy transfer can be very intense, making it ideal for creating crisp crusts or seared exteriors. Dark food with a dull surface will absorb more of the heat rays hitting it than a light-colored or shiny food—just like how a black shirt gets hotter in the summer sun than a white shirt. And as food darkens, it absorbs more radiant energy, which speeds up the cooking process.

Microwave ovens also use electromagnetic waves called microwaves, which are a type of invisible light that heats food differently than radiation.

EXAMPLE: Broilers and Microwaves

Broiling is a powerful cooking method that relies specifically on infrared radiation to cook food from above. Unlike convection or conduction, which transfer heat through air or direct contact, broiling bathes food in invisible light waves that excite molecules on the surface, rapidly browning and crisping it. This makes broiling ideal for finishing dishes or searing delicate surfaces like fish, gratins, or toast.

To broil effectively, you must locate your oven’s “sweet zone,” the optimal spot where heat is most even and intense—too close and food may burn unevenly, too far and heat may reflect unpredictably. Shiny surfaces reflect radiation and cook slowly at first, while darker ones absorb more energy and can suddenly overcook, so constant attention is essential.

Like grills and broilers, microwave ovens deposit energy and thus heat into food by radiative transfer, but the radiative heating of a microwave works very differently than these other methods do. The microwaves are tuned to a particular frequency that excites vibrations in water molecules—generating heat through friction. Water molecules can receive this kind of transmission because they are polar. Fats and oils are not polar molecules, but they can also be vibrated in other ways using microwaves, so they also become a source of heat generation. Microwave ovens do not heat air, dishes, or the walls of the oven. They heat only water and oil. Dry substances will not heat up at all in a microwave oven.

Microwave ovens are often considered to be second-class tools that aren’t appropriate for “real” cooking. Yet that notion ignores the fact that microwave ovens do an excellent job at many kitchen tasks, such as making beef jerky and frying herbs for garnishes. One issue to keep in mind with microwave ovens is that their wattage—and thus the amount of heat delivered to food—differs from model to model, so some experimentation is required to fine-tune recipes and techniques to the oven you are using.

Understanding how heat works—where it goes, how it’s lost, and how long it takes to travel—can make you a better cook. It’s not just about cranking up the burner. It’s about choosing the right tools, managing heat loss, and knowing how your food will respond.

FURTHER READING

• Modernist Cuisine at Home
• The Household Stove—Modernist Cuisine at Home, p. 36
• Conventional Ovens—Modernist Cuisine at Home, p. 34
• Stoves—Modernist Cuisine at Home, p. 24
• Grills—Modernist Cuisine at Home, p. 44
• Heat in Motion—Modernist Cuisine Vol. 1:277
• When color indicates temperature—and when it doesn’t—Modernist Cuisine Vol. 1:291
• What Makes a Hot Wok Glow?—Modernist Cuisine Vol. 1:287
• Heating Different Materials—Modernist Cuisine Vol. 1:280
• Cooking with Microwaves—Modernist Cuisine at Home, p. 40 / Modernist Cuisine Vol. 1:182
• Cooking with Moist Air—Modernist Cuisine Vol. 2:154–181
• Microwave Myths—Modernist Cuisine Vol. 2:190

Welcome to the Modernist Cuisine newsletter archive! Browse every past edition to catch up on monthly tips, favorite recipes, and new techniques from the Modernist Cuisine team.

Want every issue delivered to your inbox? Subscribe to our newsletter. We send 2–3 emails each month packed with ways to improve your cooking and baking with recipes, techniques backed by science, book updates, and other content we think you’ll find interesting.

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2026

January Newsletter | Making Chicken Wings

May Newsletter | Choosing Proper Cookware

June Newsletter Part 1 | Summer Grilling

June Newsletter Part 2 | The Modernist Cuisine Grilling Collection

July Newsletter Part 1 | Cooking Steak

July Newsletter Part 2 | The Beef Collection

August Newsletter Part 1 | Cooking Salmon

August Newsletter Part 2 | The Seafood Collection

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2025

January Newsletter | Pressure-Caramelizing Soups

February Newsletter | Time-Saving Tips for Making Bread and Pizza Dough

March Newsletter | Mastering Gluten-Free Bread and Pizza

April Newsletter | Mastering Sourdough Starter

May Newsletter | Understanding Neapolitan Pizza

June Newsletter | How to Troubleshoot Baking Bread

July Newsletter | Evaluating Doneness While Baking

August Newsletter | Scoring Bread Dough

September Newsletter | Modernist Ingredients Explained

October Newsletter | Making the Perfect French Fry with Starch Infusion

November Newsletter | Building a Better Thanksgiving Turkey

December Newsletter | Holiday Baking and Cooking Guide

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2024

January Newsletter | Modifying Texture in Pizza Crumb and Crust

February Newsletter | Common Pizza Dough Problems

March Newsletter | The Cast-Iron Combination Cooker

April Newsletter | Calling Proof

May Newsletter | Environmental Factors that Affect Fermentation

June Newsletter | How Rye Works

July Newsletter | Second Chance Sourdough

August Newsletter | All About Enriched Breads

September Newsletter | All About Bagels

October Newsletter | Frankencheese, the Solution to Cheese that Won’t Melt

November Newsletter | All About Brick-like Breads

December Newsletter | Mastering Brioche

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2023

March Newsletter | Choosing the Right Flour for the Job

April Newsletter | Brightening Your Salads this Spring

May Newsletter | Making Pizza for a Pizza Party

June Newsletter | How to Save Overproofed Dough with Dough CPR

July Newsletter | Make the Most of Your Grill

August Newsletter | Common Mixing Problems while Making Pizza or Bread Dough

September Newsletter | Adapting Pizza Sauces from Soups and Non-Pizza Sauces

November Newsletter | Cold-Proofing Pizza Dough

December Newsletter | Mastering Dough Handling and Shaping for Improved Pizza

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Explore the Modernist Cuisine series to learn more about cooking, baking, and pizza making!

Sous vide cooking produces precise, consistent, and delicious results. But what comes out of the bag doesn’t always look the best. Grayish meat, pale vegetables, or limp fish can all be visually underwhelming. Thankfully, there’s an easy way to bridge the gap between precision cooking and mouthwatering presentation: blanching and searing. These traditional techniques not only enhance appearance but also improve texture, flavor, and food safety.

Let’s dive into how and when to use each technique and how they complement sous vide cooking beautifully.

Blanching

Blanching (briefly exposing food to high heat via boiling water or steam) is typically done before sous vide cooking. It’s especially important for fruits and vegetables, and it plays several roles:

• Sanitizes the surface of the food
• Preserves color and texture by deactivating enzymes
• Firms up soft foods like seafood, making them easier to vacuum seal

When blanching, hotter is better. It might seem counterintuitive, but the hotter the water, the less time the food needs to be exposed to it—limiting heat penetration. For example, 76 °C / 168 °F water sanitizes a food surface in a second, while 70 °C / 158 °F takes about 10 seconds.

For fruits and vegetables, blanching in a full rolling boil is preferred over steaming or simmering. A temperature of 100 °C / 212 °F can destroy 90% of polyphenol oxidase in just 2 seconds, whereas it takes 2 full minutes to achieve the same level of enzyme destruction at 90 °C / 194 °F.

Searing Before Sous Vide

Searing before cooking can trigger the Maillard reactions responsible for the savory, browned flavors we associate with grilled, roasted, or pan-seared foods. Essentially, you are building the flavor in advance. These reactions begin around 130 °C / 266 °F—well above the range of sous vide cooking—and can continue even after the temperature drops. Presearing is a useful way to deepen the flavor of sous vide dishes, especially for meats and seafood.

It also helps add visual appeal. Grill marks on fish or chicken can be seared in before vacuum packing, which makes finishing easier later.

However, presearing isn’t always ideal. The crust won’t stay crisp during sous vide cooking and may need to be redone before serving.

Pro Tip: Certain meats, such as lamb or grass-fed beef, may develop off-flavors if seared before cooking.

Searing After Sous Vide

Because sous vide cooking happens at relatively low temperatures, it doesn’t always develop the same colors, textures, or flavors that traditional high-heat methods do. That’s where searing after sous vide comes in.

Adding a final sear after cooking brings back those desirable qualities: browned crusts, rich aromas, and texture contrast between the exterior and the tender interior. This hybrid approach gives you the precision of sous vide with the best aspects of traditional cooking.

One exception is crispy skin. While a sear after sous vide will initially crisp the surface, moisture from the juicy flesh underneath can quickly soak the skin and make it soggy again. In those cases, leaving a thin layer of fat beneath the skin can help, or you may need to crisp the skin separately.

The key to a great sear after sous vide is high heat for a short time. This allows you to brown the outside without overcooking the inside. Here’s a look at common tools:

• Pan/skillet: Great control and caramelization; may need oil to prevent sticking
• Blow torch: Quick and targeted but can leave fuel odors or uneven browning if misused
• Broiler: Even top-down heat but less precise
• Grill: Adds smoky flavor and classic marks
• Plancha or griddle: Excellent for even crusts on larger surfaces
• Deep-frying: Maximizes crust; best for breaded or battered items
• Heat gun: Effective for crisping without adding moisture but less flavor development

Blanching and searing are simple ways to elevate your sous vide results. Whether you’re preserving vibrant green vegetables or adding a flavorful crust to a perfectly cooked steak, these techniques give you the best of both worlds.

FURTHER READING

• Cooking and Reheating—Modernist Cuisine at Home, p. 60
• Blanching and Searing for Sous Vide—Modernist Cuisine vol. 2:267
• Strategies for Searing After Sous Vide—Modernist Cuisine vol. 2:270
• The Pros and Cons of Blanching or Searing Before Cooking—Modernist Cuisine vol. 2:269