3 oz of vanilla vodka
1 oz of creme de cacao (or chocolate liqueur)
1 oz of Kahlua coffee liqueur (or coffee liqueur)
1 oz of chilled espresso (or espresso)
In a martini shaker over ice, add the Vanilla Vodka, Kahlua, and Creme de Cacao. Shake. Strain ice and pour into a chilled martini or cocktail glass. Stir in the chilled espresso and serve.