SHAKE all ingredients with ice. FINE STRAIN into a chilled Coupe glass. EXPRESS lemon zest twist over the cocktail and use as garnish.
Created by London bartender C. A. Tuck and first published in Billy Tarling's 1937 Café Royal Cocktail Book, this cocktail is famously named after the 20th Century Limited express train. The original recipe used Kina Lillet, which is no longer available, necessitating modern interpretations such as the use of Americano Bianco. The choice of white crème de cacao significantly impacts the final taste, with Joerg Meyer even creating a specific liqueur for this drink.
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