Butter Rum Frosting
["1 c. butter, softened", "4 c. confectioners sugar", "1/3 c. dark corn syrup", "2 tsp. rum extract"]
["Cream butter.", "Add sugar and syrup alternately to butter, beating well after each addition.", "Beat in rum extract.", "If necessary, add more sugar until proper spreading consistency is reached."]
["butter", "confectioners sugar", "corn syrup", "rum"]