They're almost fully stocked with generic items. Some are quite good. They came in solid gray cans with BEER printed on the side in big black letters. We used to call it chunky-style. You could spoon it out though, and the plants seemed to like it, which was good because the kitchen drain didn't.
People are the same way.
There are those who can consume anything. We have to be a bit more selective. Some of us are thin, some of us heavy. I personally have tried both. I've found the prospect somewhat maddening.