Chocolate Icing - cooking recipe

Ingredients

2 c. sugar
1/2 c. cocoa
1/2 c. margarine
1/2 c. milk
1 1/2 tsp. vanilla

Preparation

Mix all ingredients and bring to a bowl slowly.
Boil 1 minute; cool.
Place on sheet cake while cake is still warm.
Put holes in cake with straw.