3 oz Organic Nation Gin
1 oz Organic Nation Vodka
1/2 oz Lillet Blanc
Garnish: Orange twist or Bond's way, a lemon twist
Stir with ice. Strain into a cocktail glass. Bond prefers his shaken till really cold.
Source: As first mentioned in James Bond Casino Royale, created by Ian Fleming
A Brief History:
This classic drink was popularized in the novel Casino Royale (1953). Of the teleplay and two films based on this book, the signature cocktail is mentioned twice between the three - in the 2006 Casino Royale film: when Bond orders it at the poker table (and several others follow suit), and when Bond states that he named the drink the Vesper, because once he tasted it, it was all he wanted to drink. The cocktail is also mentioned by its ingredients in Quantum of Solace, and Bond refers to it by name later in the film.
Because Kina Lillet has not been available since the 1960s (the name was changed to "Lillet Blanc", in the 1980s the quantity of quinine in the product was reduced, removing its bitter aftertaste), its mention in the recipe in the two movies mentioned above is anachronistic.
Ironically, Vesper means 'evening' in Classical Latin.