It’s not exactly a cake, nor is it a bowl of fluffy mousse. The beauty of this dessert is that for all of its chocolate intensity, it is creamy and smooth without the density and darkness of a traditional flourless chocolate cake. This is thanks to the mousse component with its addition of whipped cream and egg whites. and repurposed a bag of frozen raspberries and a pint of kumquats into two fruit garnishes, which happen to complement each other magnificently while embellishing the cake. Serve with whipped cream or raspberry coulis and/or candied kumquats (recipes below), or simply dust with confectioners' sugar.