Continue Getting Recipes Type "Yes" Blue Velvet Cake Ingredients ½ cup Crisco 1 ½ cups sugar 2 eggs 1 ounce royal blue gel paste food coloring 2 drops violet gel paste food coloring 2 tablespoons cocoa 2 . Whisk together Crisco, sugar and eggs. Prepare a paste from food coloring and cocoa and add to the mixture. Add salt and flour, buttermilk and vanilla. Add more soda and vinegar; Just mix, don't over beat. Bake for 25 minutes. The cake cools thoroughly before freezing. I hope someone finds this useful!