The consumption of sake is a sacrosanct affair in Japan. In Japanese, the term “sake” technically denotes all alcohol, though it is often used interchangeably with the less ambiguous “nihonshu.” The true genesis of the island nation’s archetypal brew is lost to time, though the divine concoction of water, rice, yeast and koji mold likely originated, or at least became more standardized, sometime during the Nara period (710-784 AD) when Empress Genmei consolidated rule over an agrarian society.
Most people in this fledgling nation state participated in animistic and ancestral folk worship, within which rice, and by extension nihonshu, came to play important ritualistic roles.