Vodka, Martini – shaken, not stirred

The ‘Vesper Martini’ is the famous drink, ordered by 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. Got it?’
The recipe for Bond’s “Vesper” martini, as described in the 2006 movie:
‘Three measures of Gordon’s; one of vodka; half a measure of Kina Lillet. Shake it over ice, and add a thin slice of lemon peel.’
To make this drink yourself, you have to mix the ingredients, strain, and serve in a chilled cocktail glass. Garnish with a large thin slice of lemon peel.
Kina Lillet, now called Lillet, is hard to find, so you can replace this with dry Vermouth if necessary.
In the movie Casino Royale, when Vesper asks Bond if he named the drink after her “because of the bitter aftertaste”, 007 replies that he named it for her, “because once you have tasted it, you won’t drink anything else.”