Chocolate Icing
["2 c. sugar", "4 Tbsp. cocoa", "1 small can Pet milk", "1 stick margarine", "1 tsp. vanilla"]
["Mix sugar and cocoa; add milk a little at a time.", "Cook on low heat.", "Bring to a full boil and boil for 1 minute.", "Add margarine and vanilla.", "Beat until creamy."]
["sugar", "cocoa", "Pet milk", "margarine", "vanilla"]