Defrost the raspberries and strawberries. Melt the butter. Put the lady fingers and waffles in a freezer bag and crumble with a cake roll. Add crumbs to the butter and mix well. Lightly brush the bottom of a springform pan (26 cm Ø) with oil, then press the crumb mixture onto it. Put the base in a cool place.
Puree berries and icing sugar and pass through a sieve. Coarsely chop the chocolate coating. Heat the milk, remove from the heat and melt the couverture in it. Separate the eggs. Put egg yolks, quark, 175 g sugar, lemon rind, starch, cheesecake aid and 300 g sour cream in a bowl and mix. Divide the mixture into thirds. Stir the berry puree under 1/3. Halve the vanilla pod lengthwise and scrape out the pulp with the back of a knife. Mix 1/3 mass, vanilla pulp and 150 g sour cream. Stir the chocolate coating into 1/3. Beat the egg whites in a large bowl until stiff, adding 25 g sugar.
Stir the berry puree under 1/3. Halve the vanilla pod lengthwise and scrape out the pulp with the back of a knife. Mix 1/3 mass, vanilla pulp and 150 g sour cream. Stir the chocolate coating into 1/3. Beat the egg whites in a large bowl until stiff, adding 25 g sugar. Add 1/3 beaten egg white to each third of the mixture. First pour the berry mixture, then the vanilla mixture and finally the chocolate mixture onto the base. Bake the cake in a preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 55-65 minutes. Leave the cake in the oven with the door half open for about 30 minutes, then remove from the edge and let it cool down on a cake rack. Dust the cake with cocoa and sprinkle with crumbled ice wafers. Decorate with ice cream parasols
Add 1/3 beaten egg white to each third of the mixture. First pour the berry mixture, then the vanilla mixture and finally the chocolate mixture onto the base. Bake the cake in a preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 55-65 minutes. Leave the cake in the oven with the door half open for about 30 minutes, then remove from the edge and let it cool down on a cake rack. Dust the cake with cocoa and sprinkle with crumbled ice wafers. Decorate with ice cream parasols