Alcoholic drink jugs suggest that intentionally fermented drinks existed at least as early as the Neolithic period (cir. 10,000 BC). Many animals also consume alcohol when given the opportunity and are affected in much the same way as humans, although humans are the only species known to produce alcoholic drinks intentionally. Beer is a beverage fermented from grain mash. It is typically made from barley or a blend of several grains and flavored with hops. Most beer is naturally carbonated as part of the fermentation process. If the fermented mash is distilled, then the drink becomes a spirit. In the Andean region,
Korean alcoholic drinks A regional, slightly-creamier variant, originally from Gyeonggi-do, is called "dongdongju". Another variety, called "ihwaju" (hangul: ; hanja: ; "pear-blossom wine") is so named because it is brewed from rice with rice malt which ferments during the pear-blossom season. "Ihwaju" is often so thick that it is eaten with a spoon. A similar drink is known as "Gamju"; this name is also used for non-alcoholic sweet drinks, including "Sikhye" (). "Cheongju", or "yakju", is a refined rice wine made from steamed rice which has undergone several fermentation stages. Also known as "myeongyakju" or "beopju", it is distinguished from "takju" by its