This is a fun and simple way to begin enjoying the virtues of low-temperature cooking without investing in sous vide equipment. A pot of water preserves a constant temperature for up to 1 hour, far more time than is necessary to cook fishand even enough time to cook some steaks (a picnic cooler keeps the water temperature stable for up to 5 hours!). The more food you put in the water bath, or the colder the food is, the more the water temperature will drop. To help hold the heat, bring the food to room temperature before cooking it, and use your largest pot and an abundant amount of water.
adapted from Modernist Cuisine at Home
Additional Tips and Substitutions for the Salmon:
- If you have time, decrease the salt in step 1 to 20 g, and the sugar to 15 g, and brine the fish for 24 hours.
- If you use warm water for the brine, it will dissolve the salt and sugar more quickly. You must, however, cool the brine completely before adding the salmon.
- Use the best quality fish you can find.
- It is safer to use previously frozen fish than fresh fish. Because fish will be inedible if cooked to pasteurization temperatures, the fish in this recipe won’t be pasteurized. Professionally freezing fish, however, kills most pathogens that are found in fish. Never serve “lightly cooked” food to immunocompromisedpeople.
- After draining the fish in step 3, you may refrigerate it for up to 24 hours before cooking.
- Brining the fish firms its surface and makes it both tastier and easier to handle
- You can use a large pot, a cooler, or even the sink for this recipe
- Use a probe thermometer with a digital display, tethered by a wire. Insert the probe into the thickest part of one of the fillet.
- Use the water displacement method to remove air from your zip-top bags. Place one fillet of salmon in a zip-top bag, and add some oil (the oil will help remove the air). Slowly lower the open bag into the water of the bath (or use a separate bowl of water). The water will squeeze out the air. This is known as Archimedes’s principle.
- To reach a core temperature of 45 °C / 113 °F, a 2.5 cm / 1 in thick piece of salmon will take about 25 minutes. A thinner piece may take as little as 12 minutes, while a thicker piece may take 30 minutes or more.
- Our favorite temperature is 45 °C / 113 °F, which is rare. But you can go up as high as 52 °C / 126 °F for a firm texture.
- You can also cook other types of fish sous vide in the sink. For a list of target core temperatures for different species of fish, see page 281 of Modernist Cuisine at Home or page 3·102 of Modernist Cuisine.
- If the sealed pieces of fish float, clip them to the side of the pot. It is important that they stay completely submerged in the water.
- Make sure the butter is completely melted before adding the fish to the pan.
- You only need to leave the fish in the pan for about 30 seconds on each side. You don’t want to overcook it!
Additional Tips and Substitutions for the Spice Mix:
- You can find chamomile blossoms wherever bulk spices are sold. In a pinch, you can also break-open a teabag of chamomile tea.
- The tapioca maltodextrin and white poppy seeds are optional. The tapioca maltodextrin will absorb oils from the nuts as well as prevent the mixture from clumping.
- This spice mix will keep up to two months if it’s vacuum sealed and refrigerated.
- This mix is great on a wide variety of foods, such as chicken, potatoes, squash, and asparagus.