So I was searching an abandoned tent (or similar, can't remember for sure) and came across a clay pot which I tried to open but instead it took the pot into my inventory. Inside were two pricky pears or may have been two stacks, not sure, but now it shows one but with a quantity of "0" and it never runs out. I can equip it to my hotbar and it acts as an infinite source of food, but as this seems kinda cheaty, I eat regular food instead =)
I also found another...