Buttercream Frosting
["1 lb. powdered sugar", "6 Tbsp. butter", "1 tsp. vanilla", "1/8 tsp. salt", "3 to 4 Tbsp. milk"]
["Mix all ingredients until smooth.", "Yield: Frosts 2 (9-inch) round cakes or 36 cupcakes."]
["powdered sugar", "butter", "vanilla", "salt", "milk"]