Mix 100 g butter in pieces, flour, 75 g sugar, 1 packet vanilla sugar, 1 egg and 1 pinch of salt with the dough hooks of the hand mixer. Quickly work into a smooth dough with your hands. Wrap in foil and chill for about 30 minutes. Roll out the dough into a circle (approx. 34 cm Ø) on a floured work surface. Line a springform pan (26 cm Ø) with it. Pull the dough up about 4 cm along the edge. Prick the base several times with a fork.
Put it in a cold place. Chop the chocolate finely and melt it over a hot water bath. Let it cool down a little. In the meantime, whisk 100 g butter, 150 g sugar and 1 packet vanilla sugar with the whisk of the hand mixer until creamy. Separate 4 eggs and stir in egg yolks one after the other. Stir in curd and pudding powder. Divide curd mixture. Stir the chocolate into one half. Beat the egg whites and a pinch of salt until stiff, halve and fold into both quark masses. Pour the light and then the dark quark mixture into the springform pan. Pull the mixture spirally with a fork. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 1 hour. Let the cake rest in the switched off oven for about 15 minutes.
Stir the chocolate into one half. Beat the egg whites and a pinch of salt until stiff, halve and fold into both quark masses. Pour the light and then the dark quark mixture into the springform pan. Pull the mixture spirally with a fork. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 1 hour. Let the cake rest in the switched off oven for about 15 minutes. Take out and let cool down. Wash, clean and pat dry the strawberries. Depending on the size, halve or quarter the berries and spread on the cake. Mix the cake glaze powder and 2 tablespoons of sugar. Add the grape juice bit by bit while stirring constantly. Boil up while stirring. Spread the icing from the middle of the cake with a tablespoon
Take out and let cool down. Wash, clean and pat dry the strawberries. Depending on the size, halve or quarter the berries and spread on the cake. Mix the cake glaze powder and 2 tablespoons of sugar. Add the grape juice bit by bit while stirring constantly. Boil up while stirring. Spread the icing from the middle of the cake with a tablespoon
waiting time approx. 2 hours