Pastry chefs Elizabeth Falkner of Citizen Cake and Johnny Iuzzini of the Jean-Georges restaurant group recently battled in a cupcake-off at the Astor Center in Manhattan. So what cupcakes did they make? Both involved chocolate, but the similarities pretty much ended there. Falkner did a Chocolate Pub Cake with stout beer in the batter and an easy-to-whip-up fudge frosting (here's the recipe!) and Iuzzini did a chocolate-beet cake (mmm, you really have to make this) with raspberries.