Buttercream Icing
["1/2 c. shortening", "1/2 c. butter or margarine", "1 1/2 tsp. vanilla", "5 c. powdered sugar", "3 Tbsp. milk"]
["Cream the shortening, margarine and vanilla. Add milk and sugar alternately. Blend until smooth."]
["shortening", "butter", "vanilla", "powdered sugar", "milk"]