Crush the meringue (foam) by placing the meringue in a plastic bag and then crushing it with the corrugated wood.
Whip the cream with the cream stiffener and vanilla sugar until stiff. Then fold the quark into the cream mixture.
Layer everything in a large bowl in the following order: meringue, raspberries, cream curd mixture. Continue until the last layer is meringue. Chill in the refrigerator for a few hours until eaten. Sprinkle with chocolate flakes just before serving.