C ream together the shortening, sugar and eggs until light.
Slowly blend in the food coloring and cocoa to this mixture. A dd the salt, baking soda and vinegar to the buttermilk and mix thoroughly. Add this mixture in thirds, alternately with the flour, to the shortening mixture, beating thoroughly after each addition. P our the batter into two greased and floured cake pans and bake for 25 to 30 minutes or until done. When done, remove from pans and cool on wire rack.