Chocolate Fudge Icing
["1/2 lb. butter", "1 tsp. vanilla", "1 (8 oz.) can cocoa", "3/4 to 1 c. whole milk", "3 lb. powdered sugar"]
["Blend butter, vanilla and cocoa in large mixing bowl. Slowly add milk and powdered sugar alternately. Beat until well blended."]
["butter", "vanilla", "cocoa", "milk", "powdered sugar"]