Sort the fresh blackberries, wash them, drain the blackberries from the glass. Separate 6 eggs, whip 4 eggs and 6 egg yolks in a very large mixing bowl until thick and creamy (approx. 12 min.), Sprinkling in sugar, vanilla sugar and salt. Mix the quark with the mascarpone, stir in the pudding powder.
Whip the cream and egg whites separately until they are very stiff. First fold the cream, then the egg whites into the curd mixture. Carefully fold in the blackberries.
Spread the quark mixture into a well-greased drip pan lightly sprinkled with breadcrumbs, bake in a preheated oven at 175 ° C (convection is not suitable) for 50 - 60 minutes, leave to cool.