Offering two great tastes and textures that taste great together, this dessert showcases rich, creamy bittersweet chocolate mousse made with heavy cream. After chilling the mousse in the refrigerator for a few hours, it's topped with cubes of the mint gelatin that are infused with lemon. Take this interesting, decadent dessert to the next level by whipping sweetened cream and finishing the bowls with chocolate shavings. It's best to assemble these right before serving.