Waldorf Astoria Cake Frosting

1 (16 ounce) package confectioners sugar

1 cup shortening

⅔ cup milk

⅛ teaspoon salt

1 teaspoon butter flavored extract

1 teaspoon clear imitation vanilla extract

In a large bowl, combine confectioners sugar, shortening, milk, salt, butter flavored extract and vanilla. Beat until smooth and fluffy.