In the early game, I prioritize spoiling foods. I focus on finding foods that are enjoyable - TV dinners, fruit juices, fruit jams, yoghurt, pudding, etc - but will eat just about anything that doesn’t bite back, and anything that insists on biting when I don’t want to be bitten (I wonder what cougar actually tastes like).
In the mid game, I tend to eat a lot of meat pizza, waffles, oatmeal, or scrambled eggs, actually. With the exception of fresh fruits and fresh meats (which are easy enough to get, plant a garden next to your base or forage in open fields), the rest of the ingredients are non-perishable and you get 4 waffles/pizza slices every time you cook one up. Supplement with the contents of vending machines for happiness and either mixed drinks, ale/beer, or if I’ve had too much alcohol to drink lately then just water, tea, or soda. A typical mid game meal is a slice of pizza, a couple of handfuls of the good chips, some peanut butter cups, and a Belgian ale. I probably eat better after the fall of civilization than I did beforehand.
Lategame I mostly eat whatever comes to hand. When you start ranging far away from home, dinner is whatever you can cook over a burning bush next to your hobo-mobile. It stops mattering anyways, since with skill rust turned off I’m close to maxing out all of my skills anyways and mood isn’t as important.