Black and White Cake By Wood and Spoon Blog by Kate Wood. This is a dark chocolate cocoa powder cake, made easily in one bowl, layered with a cooked flour vanilla bean frosting and a blackberry and dark chocolate ganache. This is a layer cake that is stunning and can even be used as a party/ wedding cake. The berry ganache is made with jam and cream. The cake is moist and fluffy, incredibly simple, and the frosting and smooth, light, and creamy cloud like.