Martini

The Martini, more so than any other drink, embodies the class and style of the cocktail in the popular imagination. This cocktail is made with gin and vermouth, garnished with either a green olive or a lemon twist. The less vermouth it contains, the drier it is. A martini may be served Straight up or On the Rocks. It may also be made with vodka, in which case it's called a vodka martini. A Gibson is a martini garnished with a tiny white onion.

* [http://en.wikibooks.org/wiki/Bartending/Co