I would think there are much older recipes that were not written but handed down from generation to generation. I can imagine the whole family got involved, from the hunt to the preparation with whatever edible foliage they could find to the fire. That unwritten knowledge still carries on today. I have several recipes from my mother that are only in my head, and are the same ones she got from my grandmother. Many people I know have unwritten recipes from their ancestors. I wouldn’t be surprised that more and older recipes written or in hieroglyphics are found in the future. I’m thinking that not too long after mankind learned how to make a fire and cook meat some form of recipes followed.
Please write them down.