The Vesper

In Ian Fleming's original book, Casino Royale (1953), Bond orders a dry martini in a deep champagne glass, asking for it to be made with three measures of Gordon's gin, one of vodka, half a measure of Kina Lillet, a sweet French apertif. "Shake it very well until it's ice-cold, then add a large thin slice of lemon-peel."

He calls this drink a "Vesper", after Vesper Lynd, the original Bond Girl.