Best Chocolate Frosting - cooking recipe

Ingredients

1/2 c. cocoa
2 c. sugar
2/3 c. milk
1/2 c. butter
1 tsp. vanilla extract

Preparation

In a small saucepan, mix cocoa and sugar well; then add milk. Bring to a boil and cook 4 minutes.
Remove from heat and add butter and vanilla.
Let stand 15 minutes; then beat 9 minutes or until creamy.
Let stand for 15 minutes, or until desired thickness.
Then spread on cake.