What's the oldest known recipe?

Cooking how-to videos, recipe blogs and mass-produced cookbooks may be relatively recent inventions, but our ancestors liked to cook, too. Archaeologists have found remnants of food resembling our own all over the world, from traces of burnt porridge on Stone Age pots to "beer loaves" of bread in ancient Egypt. Yet, for much of history, cooking was an art passed down orally and not often documented in writing.So what's the oldest known recipe?The answer hails back to one of the oldest civilizations, although their recipes look a little different from the ones we see today...In fact, what we now know...