Select and wash the raspberries. Mix with 2 tablespoons sugar and liqueur. Whip the crème fraîche, 5 tbsp. sugar and vanilla sugar with the whisk of the hand mixer for 3-5 minutes until creamy. Stir in the quark bit by bit.
Crumble the cantuccini roughly.
Layer marinated raspberries, curd cream and cantuccini in a large glass bowl. Finish with quark cream and cover and chill for at least 3 hours.
Just before serving, sprinkle meringue tuffs or coarsely crumbled meringue shells over the trifle.