Vodka is a distilled beverage composed primarily of water and ethanol, sometimes with traces of impurities and flavourings. Traditionally, vodka is made by the distillation of cereal grains or potatoes that have been fermented, though some modern brands use other substances, such as fruits or sugar.
Since the 1890s, the standard Polish, Russian, Belarusian, Ukrainian, Estonian, Latvian, Lithuanian and Czech vodkas are 40% alcohol by volume.
Vodka is traditionally drunk neat (not mixed with any water, ice, or other mixer), though it is often served chilled in the vodka belt countries (Belarus, Estonia, Finland, Iceland, Latvia, Lithuania, Norway, Poland, Russia, Sweden, Ukraine). It is also commonly used in cocktails and mixed drinks, such as the vodka martini, Cosmopolitan etc.