1 cup (2 sticks) margarine 1/2 cup solid shortening 3 cups all-purpose flour 3 cups granulated sugar 5 eggs 1/2 cup powdered cocoa 1 tablespoon vanilla extract 1/2 teaspoon baking soda 2 ounces red food coloring 1 cup milk
Preheat oven to 300 degrees F. Lightly grease and flour a tube or Bundt pan.
Cream shortening, margarine, and sugar together. Add eggs, one at a time. Combine dry ingredients. Add to mixture slowly, alternating with milk. Add food coloring and vanilla extract and beat well. Turn into prepared pan. Bake for 1 1/2 hours.
Cool in pan 10 minutes. Turn onto rack. Frost with cream cheese frosting when completely cool.