Recipe for Hershey's "Perfectly Chocolate" Chocolate Frosting

From Hershey's can

Ingredients:

1/2 cup (1 stick) butter or margarine

2/3 cup Hershey's cocoa

3 cups powdered sugar

1/2 cup milk

1 tsp vanilla

Directions:

Melt butter

Stir in cocoa

Alternately add powdered sugar and milk, beating to spreading consistency. Add small amount of additional milk if needed.

Stir in vanilla

Makes about 2 cups frosting