Add unsweetened cocoa, sour cream, buttermilk, vanilla extract, vinegar and
red food coloring beating on low speed until fully incorporated.
Ingredients: 1 1/2 cups chocolate graham cracker crumbs 1/4 cup butter, melted 1 tablespoon granulated sugar 3 (8 - ounce) packages cream cheese, softened 1 1/2 cups granulated sugar 4 large eggs, lightly
beaten 3 tablespoons unsweetened cocoa 1 cup sour cream 1/2 cup whole buttermilk 2 teaspoons vanilla extract 1 teaspoon distilled white vinegar 2 (1 - ounce) bottles
red food coloring 1 (3 - ounce) package cream cheese, softened 1/4 cup butter, softened 2 cups powdered sugar 1 teaspoon vanilla extract