I think all food items should come with a calorie count, and I think each of the characters should have the equivalent of a fitbit tracking system, so we can see how many calories they burn and thus need to eat for maintenance purposes.
But, but, but...this is a place where I can eat all the cheese I want without getting fat. Don't take that away from me :P
See Player Handbook page 185 subsection FOOD and WATER.
It's not in regards to healing after combat but it is for healing of some sort.
