non-stick cooking spray and dusted the pans with cocoa powder.
in a separate bowl, make a paste of the remaining 2 tablespoons cocoa and the food coloring.
4. blend into butter mixture.
5. alternating in 2 batches each, add dry ingredients and buttermilk to the butter mixture. in the last batch of buttermilk, mix in the vinegar before adding to the batter. mix until blended. divide batter among the 2 pans and bake for about 30 minutes. cool on a rack completely.
prepare your cake pans before you start. i use butter and then dusted with a little cocoa powder. i used my favorite 8-inch cake pans for this cake. normally i would use 