The article explores the history of Beer, an alcoholic beverage typically brewed from cereals, in Sumer, and discusses how ancestors of the Sumerians, start drinking beer, around 10,000 BCE. Topics discussed include convergent evolution of beer with development in many geographically diverse areas, including the Far East, the Americas, and the Middle East; fundamental role beer had in Sumerian civilization; and implications the drink on civilizations which succeeded Sumer.