The 'Vesper Martini' is the famous drink ordered by James Bond in both the book and the movie Casino Royale. The recipe for Bond's "Vesper" martini, as described in the 1953 book: 'Three measures of Gordon's, one of vodka, half a measure of Kina Lillet. Shake it very well until it's ice-cold, then add a large thin slice of lemon-peel.

Although the "average" Vodka Martini is better known in Bond's adventures, it is the Vesper Martini that is the "true" Bond Martini. It was the first mentioned and the one that he claims to have invented it (the only time he drinks one in the movies or novels).