The Very Best Cake Icing
["1/4 c. water", "1 c. or 20 large marshmallows", "2 Tbsp. butter or margarine", "6 oz. chocolate bits"]
["Melt water, marshmallows and butter or margarine over low heat until marshmallows are melted.", "Bring to a boil and remove from heat.", "Add chocolate bits and beat until smooth.", "Spread on cooled cake."]
["water", "marshmallows", "butter", "chocolate bits"]