This is the best chocolate bundt cake from the geniuses at America’s Test Kitchen. It is very dense, moist, with a fine crumb, a rich, assertive chocolate taste from the combination of cocoa and bittersweet chocolate, and is not overly sweet. The cake can be made a day in advance; wrap the cooled cake in plastic and store it at room temperature. (In fact, I think it might be even better the next day!) Dust with confectioners' sugar just before serving. Recipe is from Cook’s Illustrated Magazine (Jan. 1, 2004). This also works very well as a layer cake.