Black Velvet Cake

For the Cake:

• 2 cups all-purpose flour

• 1 cup granulated sugar

• 1 cup buttermilk

• 1/2 cup unsalted butter, softened

• 1/4 cup vegetable oil

• 2 large eggs

• 2 tablespoons black cocoa powder

• 1 tablespoon unsweetened cocoa powder

• 1 teaspoon baking powder

• 1/2 teaspoon baking soda

• 1/2 teaspoon salt

• 1 tablespoon white vinegar

• 1 teaspoon vanilla extract

• Black food coloring gel or paste (as needed)

Instructions