Glossy Chocolate Icing

This recipe makes more that you will need for the Old Fashioned Chocolate Cake but I heard a rumor that it tastes good on ice cream. Guess I'll have to do some taste testing.

1 stick unsalted butter
1 1/2 C. sugar
1 1/4 C. unsweetened cocoa powder
Pinch of salt
1 1/4 C. heavy cream
1/4 C. sour cream
1 tsp. instant coffee granules
2 tsp. vanilla

Melt butter in a large saucepan over medium heat.

Stir in sugar, cocoa and salt. Mixture will be thick and grainy.

Combine heavy cream, sour cream, and instant coffee in a large measuring cup, mixing until smooth. Gradually add cream mixture to chocolate until blended and smooth. Cook until sugar has dissolved and mixture is smooth and hot to the touch. Do not boil.

Off heat, add vanilla. Cool icing at room temperature until spreadable. Icing may be chilled until completely cold, then warmed gently in the microwave until spreadable.