> The researchers studied ten other comparable food lists from southern England and discovered a remarkably similar pattern: a modest amount of bread, a huge amount of meat, a decent but not excessive quantity of ale, and no mention of vegetables (although some probably were served).
https://www.medievalists.net/2022/04/who-was-eating-meat-in-...
Simply put, you have an animal who eats a bunch of veggies. It’s gathering the calories for you. Then when you kill it, you harvest those calories. There are other means of collecting calories (farming grains, milk & honey, etc) but for most of human history (even now) meat was necessary as it contained the calories to survive.