A gin and tonic is a highball cocktail made with gin and tonic water poured over ice. It is usually garnished with a slice or wedge of lime. The amount of gin varies according to taste. Suggested ratios of gin-to-tonic are 1:1, 1:2, 1:3, and 2:3. In some countries, gin and tonic is marketed pre-mixed in single-serving cans. In the United States, m... Found on http://en.wikipedia.org/wiki/Gin_and_tonic
(from the article `gin`) ...types, sometimes called London dry, may be served unmixed or may be combined with other ingredients to make such cocktails as the martini and ... Found on http://www.britannica.com/eb/a-z/g/33