Never Fail Chocolate Frosting
["2 c. sugar", "1/2 c. milk", "1 stick margarine", "2 sq. or 1/2 c. cocoa", "1 tsp. vanilla"]
["Combine all ingredients except vanilla.", "Stir until sugar dissolves over moderate heat.", "Then when mixture comes to rapid boil, boil exactly 1 minute.", "Remove from heat; add vanilla.", "Cool and beat to consistency."]
["sugar", "milk", "margarine", "cocoa", "vanilla"]