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,
Alcoholic drinks in China liquor, the seed mash described above can also be made to be eaten or drunk as a sweet dessert. Traditional Chinese medicine frequently employed alcoholic drinks (associated with yin) and alcoholic drinks were likewise used as medicine. Alcohol including extracts of plants, herbs, animal parts, or minerals are not as common as they once were but may still be encountered. One example of such a medicinal alcoholic drink is realgar wine: consumed during the Dragon Boat Festival, realgar wine consisted of "huangjiu" mixed with realgar, an arsenic sulfide also used as an insecticide. It appears in the Chinese legend of