Why does sous vide take so long?

It's fine for the bag to touch it, as long as you're not blocking water ports. And the food can touch too.

With sous vide cooking, it's absolutely vital that your bags stay submerged and that trapped air bubbles are pushed to the top of the bag and away from the food. This is the only way to guarantee that your food is heating properly, which is important for both food safety and quality.

Can you sous vide marinated frozen meats? Sure! You can marinate fresh or frozen meats for sous vide..

At either temperature, cook the salmon for about 40 minutes if cooking fresh (unfrozen) salmon, or 70 minutes for frozen salmon. Salmon can be left in the sous vide bath for up to 30 minutes after the end of cooking without significant change in flavor or texture (after 30 minutes, it starts to get a little mushy).

Overcooking foods Even though people say sous vide is easy, you can overcook your food. The food continues to cook after it leaves the pot, unless you place it in an ice bath. Also, when you go to sear your meat, you can easily overcook it during searing, especially if you're using a thinner cut.

between 15-30 minutesIt all depends on what temperature you have your sous vide set at, and the amount of water that needs to heat up. The higher the temperature and the larger the quantity of water, the longer it will take the sous vide to heat up. In general, your sous vide should take between 15-30 minutes to heat up.