I did some work earlier, since on one village I just have a single villager: she ate 18 pieces of food in an hour, in increments of 2, usually a few every 10 or so minutes. the game was on easy for difficulty, and normal for speed. I think the timing might have been skewed whenever I added a mushroom, but I did keep track of what the mushrooms added: before I added the first mushroom, the numbers had been steady for 30 or so minutes, but afterwords, they got a bit more erratic, but still not very.