Any one have a guideline for amount of food and time cooked?

If a recipe says to cook 1 lb of meat for 12 hours but I want to cook 2 lbs of meat. How do I adjust the time cooked? 

Doubling the amount of meat in your bath doesn’t necessarily mean that you need to increase the cooking time at all - not unless you’re doubling the thickness of the package (if you split the meat into two packages, preserving the original thickness, then the cook time is the same).

Here’s a couple thickness guides (if you google “sous vide thickness chart” without the quotes, you’ll get a bunch of results).
https://www.chefsteps.com/activities/sous-vide-time-and-temperature-guide
http://www.amazingfoodmadeeasy.com/info/sous-vide-equipment_old/more/sous-vide-thickness-ruler

Hope that helps! :slight_smile:

I have done a large bath with several pounds of steaks but since they were separate and the water was free to flow around them all it took the same amount of time 1 steak would have. A big roast is a different matter and the heat needs more time to penetrate to the middle.