Cooked food is a consumable item. When used, it reduces the player's Fatigue by 10%. It can also be used as a perfect gift for other inmates to make them have a better opinion of you since it is somewhat easy to obtain.
It is also the major part of the kitchen occupation as the output and you can't use an oven unless you have the kitchen job.
When giving cooked food to an inmate it raises their opinion by 1%.