Ingredients
- # 1 1/2 cups vegetable oil
- # 1 cup buttermilk
- # 2 eggs
- # 1 teaspoon white vinegar
- # 1 teaspoon vanilla extract
- # 1 1/2 cups sugar
- # 2 1/2 cups all-purpose flour
- # 1 teaspoon baking soda
- # 1 teaspoon salt
- # 1 1/2 tablespoons Dutch-processed cocoa powder
- # 2 tablespoons royal blue gel paste food coloring
- # 1 tablespoon purple gel paste food coloring
Preparation
Step 1
or the cupcakes: Preheat the oven to 325 degrees F. Line a cupcake or muffin pan with 24 regular-size cupcake liners.
Place the oil, buttermilk, eggs, vinegar, vanilla, and sugar in the bowl of an electric stand mixer and beat with the paddle attachment until thoroughly mixed. Sift the flour, baking soda, salt, and cocoa powder together and slowly add to the mixer on low speed. Scrape down the bowl thoroughly, as needed. Add the food colorings in a steady stream until desired shade is achieved; it should appear bluish-purple. Beat for another 3 minutes. Scrape the bowl one last time and mix for 30 seconds by hand.
Fill the cupcake liners two-thirds full with batter and bake until they form a semi-hard crust on top, about 25 minutes. Immediately remove the cupcakes from their pan and place on a cooling rack.