Beat the fat, sugar and vanilla sugar with the whisk of the hand mixer until foamy. Gradually stir in the eggs. Finally stir in flour and sour cream or sour cream. Heat up a waffle maker and grease it.
Bake eight waffles from the dough until golden brown. In the meantime, stir quark, sugar, vanillin sugar, lemon peel and juice and 2 tablespoons of cream until smooth. Whip the rest of the cream until stiff and fold in.
Serve cream waffles with lemon curd and the jam. Garnish with a slice of lemon after serving.