There is no conclusive proof as to which individual or civilization first discovered how to make cheese. The earliest evidence found, as of 2014. points to cheese-making dating to 5500 B.C.E. in Poland. Archaeologists discovered milk fats on ceramic fragments that suggest such activities.
Ancient legend theorizes that the process of making cheese was first discovered accidentally when transporting milk in the stomach of a sheep, cow or goat. The rennet in such an organ, combined with the heat of the sun, separates the whey and curd of cheese.
Sumerian cuneiform tablets dating to the second millennium B.C.E. describe cheese-making, indicating that the process was already well-understood by that point in history.