You just keep on learning.
7300 hours in this game and I still find new things.
I've always based whether or not I cook something on the fact that it has an (uncooked) tag.
Despite playing a lot of low loot, high pop runs that depend heavily on foraging for food I just now figured out by accident that WE CAN COOK MUSHROOMS? I've always just ate them raw or put them in salads.
So let's hear your most recent realization
Edit: My friend lied, you couldn't cook mushrooms in build 41. Still fun thread keep telling us your late game realizations