Knead butter, 75 g sugar, 1 egg, 1 pinch of salt and flour first with the dough hooks of the hand mixer, then with floured hands to a smooth dough. Wrap the dough in foil, chill for about 30 minutes
Roll out the dough on a floured work surface until round (approx. 34 cm Ø). Grease a springform pan (26 cm Ø), place the dough in it, press lightly on the edge
Separate 4 eggs. Put the quark in a bowl, stir in the egg yolks. Mix pudding powder, 100 g sugar, 1 pinch of salt and vanillin sugar and stir in. Beat the egg whites until stiff, then pour in 100 g sugar. Carefully fold the beaten egg whites into the quark mixture
Pour the cheese mixture onto the short pastry base. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 1 1/4 hours on the bottom shelf
Take out the cake, remove from the edge of the mould. Leave to cool for approx. 3 hours on a cake rack
Waiting time approx. 30 minutes