Stir ∙ 3 min ∙ 13.9% ABV ∙
The Diplomat is a low-alcohol stirred aperitif of two parts dry vermouth to one part sweet, with a touch of maraschino liqueur and orange bitters.
The Diplomat's earliest documented appearance is in Belgian bartender Robert Vermeire's 1922 book Cocktails: How to Mix Them, where it was spelled "Diplomate." Vermeire, who tended bar in London at the Royal Automobile Club, the Criterion, and the Embassy Club, noted that the drink was well known in the French Diplomatic Service, which is the likely source of its name.
The cocktail later gained wider circulation after appearing in Harry Craddock's 1930 Savoy Cocktail Book and Patrick Gavin Duffy's 1934 Official Mixer's Manual, cementing it as a low-alcohol, vermouth-forward aperitif.