German Chocolate Frosting
["1 c. evaporated milk", "3 egg yolks", "1 tsp. vanilla", "1/2 c. walnuts, chopped fine", "1 c. sugar", "1/2 stick margarine", "1/2 c. coconut"]
["Cook and stir until thickened all ingredients except coconut and walnuts.", "When thick, add walnuts and coconut."]
["milk", "egg yolks", "vanilla", "walnuts", "sugar", "margarine", "coconut"]