Granny'S Basic Chocolate Icing
["2 1/2 c. sugar", "3 Tbsp. chocolate (more may be needed)", "1 1/2 c. milk", "2/3 stick margarine", "1 tsp. vanilla"]
["Combine sugar and chocolate together, then add milk, margarine and vanilla.", "Pour into a saucepan; cook until thick."]
["sugar", "chocolate", "milk", "margarine", "vanilla"]