This Chocolate Chiffon Cake is so versatile. At its simplest just dust the top of the cake with cocoa powder or powdered sugar. To dress it up, you can pour a rich and glossy chocolate glaze over the top, letting it drip attractively down the sides of the cake. But at its most decadent you can turn it into a layer cake, by splitting it in half and filling it with a delicious mocha flavored whipped cream. Then pour the chocolatee glaze over the top, only this time smooth the glaze over the entire sides of the cakes. Finish it off with lovely swirls of the mocha whipped cream, and you have a beautiful and delicious party cake.