Where is the earliest known beer evidence found?

The earliest known evidence for beer comes from ancient Mesopotamia, including sites in modern-day Iraq and Iran. Archaeologists have found residues and written records suggesting brewing activity as early as the 4th millennium BCE. The Sumerians are especially associated with early beer culture, and beer appears in some of the oldest written texts on tablets. Brewing likely developed alongside early agriculture, since grains such as barley were ideal ingredients. Beer was an important part of daily life, religious offerings, and social exchange in the ancient world.