Hershey's Red Velvet Cocoa Cake

1/2 cup shortening

1 1/2 cups sugar

2 eggs

1 teaspoon vanilla

3 tablespoons Hershey's=AE cocoa

2 ounces red food coloring

2 1/2 cups sifted cake flour

1 cup buttermilk

1 teaspoon salt

1 teaspoon baking soda

1 tablespoon vinegar

Cream shortening and sugar. Add eggs and vanilla. Beat well. In a separate dish, blend cocoa and food coloring; add to sugar mixture. Add flour, buttermilk, and salt alternately. Mix soda and vinegar in cup and add. Bake in two 9-in cake pans, greased and floured, at 350 for 30 to 35 minutes. If desired, divide batter between three 9-in pans. Let cool before frosting.