A clear, colorless, unaged liquor originally made in Russia from potatoes. Today's vodka, which is almost odorless and tasteless, may be made from other ingredients such as corn, wheat or rye. Vodka is integral to many cocktails such as the screwdriver, bloody mary and vodka martini. If served straight, it should always be icy-cold. Flavored vodkas have become popular in the United States and may be flavored with anything from fruits to hot peppers. Some flavored vodkas are even sweetened slightly.