Tempering is the heating-and-cooling process that stabilizes chocolate, making it satiny and snappy when broken. Chocolate can only be tempered once; pour the leftover tempered chocolate from this recipe onto a baking pan to harden, then store and use as baking chocolate.
Our version of the German specialty is wonderfully left to the elements, rather than shrouded in whipped cream and chocolate shavings. Tow layers of chocolate sponge cake (or genoise) -- brushed with a creme de cassis syrup – sandwich chocolate-ganache glaze, whipped cream, and fresh blackberries (a no-pitting-required swap for cherries). The toppings? More ganache glaze and a pile of berries.