Chocolate Icing - cooking recipe

Ingredients

2 c. sugar
1/2 tsp. vanilla
1 stick margarine
3 Tbsp. cocoa
1/2 c. milk

Preparation

Combine all ingredients, except vanilla.
Cook over medium heat, stirring continually.
Let boil rapidly for 1 minute. Remove from heat and add vanilla.
Cool and beat until enough to spread on cake.
Spread on cooled cake.