Chocolate Chip Cookie Dough Devil's Food Cake Cheesecake Ingredients Cake portion: 1 oz. fine quality bittersweet chocolate, chopped evenly 1/4 cup plus 2 tbsp unsweetened dark cocoa powder 1/2 cup hot coffee (can use hot water or decaf coffee if caffeine sensitive) 1 egg 1 egg yolk 2 tbsp sour cream 1 tsp vanilla