Created in Brussels in 1949 by barman Gustave Tops for the US Ambassador, the Black Russian is a supremely simple two-ingredient classic — vodka and coffee liqueur.

• Vodka5 cl
• Coffee liqueur (Kahlúa)2 cl

1. 1Fill a rocks glass with ice.
2. 2Add vodka.
3. 3Add coffee liqueur.
4. 4Stir gently and serve.