Red Velvet Cake

2 cups flour
2 tbsp. cocoa, heaping
2 eggs
1 tsp. soda
1/4 cup cornstarch
1/2 cup shortening
1 cup buttermilk
1 tbsp. white vinegar
1/2 tsp. salt
1 1/2 cup sugar
1 tbsp. red food coloring

Cream together the cocoa, shortening, sugar and eggs; add to the dry ingredients except the soda.  Add buttermilk and food coloring.  Hold 1 tbsp. of vinegar over the bowl and pour soda into it.  This will foam up so hold it over the cake mixture bowl.  Beat together 5 minutes.  Put into a greased and floured cake pan.  Bake at 350* for 30-40 minutes.

Frosting:
Blend 5 tbsp. flour into 1 2/3 cups milk and cook, stirring constantly.  This will get really thick in 5-10 minutes.  Cool.  Mix 1/2 cup butter, 1/2 cup margarine, 1 2/3 cup granulated sugar, and 1 tsp. vanilla.  Cream the mixture unil it's light and fluffy.  Add flour and milk mixture and beat until the texture is thick and creamy.  Spread over the cake.