1 shot espresso
2 oz. vodka
1/2 oz. chocolate liqueur
1 teaspoon sugar
Ice cubes
Fill a cocktail shaker with ice. Add the vodka and chocolate liqueur. Pour one teaspoon of sugar into a brewing pitcher. Brew a single shot of illy espresso into the pitcher, and then pour into the shaker. Shake vigorously, and then strain into a martini glass.
Recipe from illy