Are you looking to make moist, tender, flaky and perfectly cooked salmon? Sous vide salmon is it. Sous vide salmon is hard to overcook and the process is very easy even for a novice cook. Salmon cooks fairly quickly, allowing you to get away without any specialized equipment for this recipe. The only thing that is required is an instant read thermometer, which most cooks already have in the kitchen.
Sous vide cooking has been around for quite some time. According to Wikipedia it was first mentioned by Sir Benjamin Thompson in 1799. Yet, only in recent years has it started going mainstream and into home kitchens. This is all thanks to the so called ‘modernist’ cooking movement. While the name ‘sous vide’ sounds pretty fancy, it’s really simple in practice. Simpler than most people would imagine. This method of cooking does take a bit longer than traditional methods, but it yields results that are practically impossible to achieve otherwise. It allows cooking food at a much lower and precisely controlled temperature. Many people find this makes meats more tender and vegetables better-flavored. This is because the food is cooked evenly throughout, keeping the juices and the aroma inside.
Putting it simply, sous vide is a cooking method where meat or vegetables are tightly sealed in a plastic bag and placed in a water bath that maintains a specific temperature. With this method the food is not exposed to high temperatures, which helps avoid overcooking and drying out. This makes sous vide method very useful for cooking fish which is very easy to overcook using the traditional methods.
Depending on the food you cook you may or may not need specialized equipment such as a sous vide immersion circulator. Different foods require different degrees of accuracy and constancy of cooking temperature. Salmon fillets generally need about 40 to 60 minutes depending on size and thickness. As such, a common boiling pot and an instant read thermometer is all that will suffice with a little tending.
To Brine or not to Brine your Sous Vide Salmon
Another benefit of cooking salmon (and other fish) using sous vide method is that it helps greatly reduce that curd-like stuff that comes out of during cooking. The white stuff that is being pushed out of salmon is called albumin. America’s Test Kitchen found that most of albumin is pushed out when fish is smoked, canned or poached. It has been recently discovered that brining fish can reduce the unsightly white layer of albumin that appears on the surface during cooking. Ten minutes in a 1 tablespoon of salt per cup of water brine is enough to minimize the effect.
The basic brine for sous vide salmon is as follows:
- 2 cups ice water
- 2 Tbsp kosher salt
- 2 Tbsp olive oil
This will be enough for 2 6-8 oz fillets. Scale proportionately if necessary.
To prepare the brine, add salt to ice water and stir until the salt is dissolved. Pour the water into a Ziploc bag, add olive oil and stir. Add salmon fillets, push out as much air as possible and seal the bag. Refrigerate for about 30 minutes but no less than 10 minutes.
You can add herbs and spices to the brine as well to add more flavor. Dill and black pepper are commonly added.
Once the brining is done, remove salmon fillets from the Ziploc bag, pat dry with a paper towel and place into another (heat resistant) bag. Add a couple of tablespoons of olive oil to prevent the fillets from sticking to each other. Gently remove as much air from the bag as possible and seal. You want to be careful not to squeeze the fillets. If you have a vacuum sealer, seal the bag with a vacuum sealer on a gentle cycle. Vacuum sealing works the best. If you don’t have a vacuum sealer, make sure the bag is big enough so that top end can stay out of the pot and not leak in any water.
There are various recommendations on what temperature is best for cooking sous vide salmon. You may find that some vary by 10 degrees or more. In the end it all depends on personal taste. I tested several temperatures and found that Chef Steps’ recommendation to cook at 122F works best for me. Others prefer their sous vide salmon a little more well-done and cook at higher temperatures. Just remember that 140F is the absolute maximum temperature you want to go to.
Another thing to keep in mind is the length of the cooking. The good thing about sous vide cooking is that you may cook longer than needed without any ill effect. Some people cook their sous vide salmon for an hour just to be on the safe side and ensure proper cooking. I cook my salmon for 60 minutes regardless of the size and thickness. This takes away any guesswork and makes thing simpler. As a matter of fact, Modernist Cooking Made Easy: Sous Vide: The Authoritative Guide to Low Temperature Precision Cooking recommends cooking salmon at 122F for one hour.
Let’s assume that you want to cook your salmon at 122F. Fill a large pot with hot tap water. In a typical house the hottest water out of the tap is about 123F to 128F. You want to bring the temperature to about 126F. Add cold water to bring the temperature down. Add some boiling hot water to raise the temperature. Have a pot of boiling water ready before the cooking.
The reason why you want to start at 126F is that as soon as you add a couple of cold salmon fillets the temperature will drop to about 122F. The 126F temperature works with a medium (about a 2 gallon) pot. For a larger pot the temperature drop will be smaller. Place the salmon inside the pot and wait for about 2 minutes to let the temperature stabilize. Stir to avoid hot/cold spots. Then check the temperature and adjust as needed. Keep checking the temperature every 7-10 minutes and adjusting as needed. Stir to avoid hot/cold spots.
The preferred method is to use a sous vide immersion circulator if you have one.
This is the best approach, but requires a substantial initial investment if you want to invest into a really good model. You can always opt to go with a less expensive but very capable immersion circulator like this Anova Culinary PCB-120US-K1.
Pan sear the sous vide salmon skin side down. This will add flavor and make the rubbery skin palatable. You don’t need to sear the other side. Preheat a skillet with two tablespoons of olive oil. Sear the salmon skin down over high heat for about 45 seconds.
Remove the salmon from the pan and serve your perfectly cooked, moist and flaky sous vide salmon immediately. It will start losing the juices and drying out the longer it sits on the plate.
Sous Vide Salmon
- 2 6-8 oz skin-on salmon fillets descaled
- 2 cups ice water
- 4 Tbsp olive oil
- 2 Tbsp kosher salt
- To prepare the brine, add salt to ice water and stir until the salt is dissolved. Pour the water into a Ziploc bag, add olive oil and stir. You can add herbs and spices to the brine as well to add more flavor. Dill and black pepper are commonly added.
- Add salmon fillets, push out as much air as possible and seal the bag. Refrigerate for about 30 minutes.
- Remove salmon fillets from the Ziploc bag, pat dry with a paper towel and transfer into another bag. Add 1 tablespoon of olive oil to avoid the fillets sticking to each other. Gently remove as much air from the bag as possible and seal. You want to be careful not to squeeze the fillets.
- Immerse the sealed bag into a pot of preheated water and cook at 122F (or higher depending on the level of doneness you want) for one hour, frequently stirring to avoid cold and hot spots, and adjusting the temperature as needed (see instructions above). Alternatively, use an immersion circulator which will make things much easier.
- Shortly before the cooking is done, preheat a large skillet with 1 tablespoons of olive oil.
- Remove the salmon fillets from the bag and sear skin side down over high heat for 45 seconds.
- Serve immediately.