Vodka originated in Eastern Europe and was first documented in Russia in the 9th century. It is a neutral spirit distilled from grain mash that has no flavor, aroma, or color. Vodka production involves fermentation of grains, distillation, rectification, and bottling. Some famous Russian vodkas include Stolichnaya and Moskovskaya. Smirnoff is a popular American vodka, while Absolut hails from Sweden. Flavored vodkas now exist, though some varieties containing natural flavors cannot be exported to the US due to health concerns.