Ingredients

8 ounces best-quality bittersweet chocolate, finely chopped 

1 cup heavy cream 

2 tablespoons unsalted butter 

2 tablespoons sugar 

4 teaspoons instant espresso powder 

Pinch of salt 

1/8 teaspoon pure vanilla extract 

Preparation

Place chocolate in a small bowl; set aside. In a medium saucepan, heat cream, butter, sugar, espresso powder, salt, and vanilla over medium heat. Pour over chocolate, and let stand until chocolate is partially melted, 3 to 5 minutes. Using a rubber spatula, stir chocolate until completely melted and smooth. Let stand until thickened and the consistency of frosting, about 1 hour.