Buttercream Frosting

Ingredients
1/2 cup butter or margarine
1/2 cup solid vegetable shortening
1 tsp vanilla extract
4 cups (1 lb) sifted confectioners' sugar
2 tblsp milk

Preparation
Cream butter and shortening with electric mixer. Add vanilla. Gradually add sugar, one cup at a time, bearing well on medium speed. Scrape sides and bottom of bowl often. When all sugar has been mixed in, icing will appear dry. Add milk and beat at medium speed until light and fluffy. To thin for icing cake, add a small amount of light corn syrup.
Makes 3 cups.