Sister Lorene Carroll'S Chocolate Fudge Icing
["2 Tbsp. cocoa", "2 c. sugar", "1/2 c. Pet milk", "1 tsp. vanilla", "1 stick margarine"]
["In a mixing bowl, with a fork, stir sugar and cocoa well. Pour all other ingredients in medium size saucepan.", "Bring to a boil, stirring constantly; boil for 3 to 5 minutes."]
["cocoa", "sugar", "Pet milk", "vanilla", "margarine"]