Mix flour, 175 g sugar, butter in flakes, salt, 1 egg and egg yolk with the dough hooks of the hand mixer to a smooth dough. Wrap in foil and chill for about 30 minutes. In the meantime mix cocoa and 100 ml hot water to a creamy mixture. Mix 8 eggs, 300 g sugar, vanillin sugar, lemon juice and zest, quark, sour cream, pudding powder, sauce powder and semolina. Mix half of the quark mixture with the mixed cocoa.
Roll out the short pastry to a rectangle (approx. 32 x 39 cm). Grease the fat pan of the oven (32 x 39 cm) and dust with flour. Line with the rolled out dough. Pour on the light curd mixture and smooth it down. Spread the dark curd mixture in large blobs. Marble with a spoon handle. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: not suitable/ gas: level 2) for approx. 1 hour. Remove the cake from the oven, place on a cake rack and let it cool completely. Put red and green cocktail cherries alternately on wooden skewers and roll them in sugar.
Spread the dark curd mixture in large blobs. Marble with a spoon handle. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: not suitable/ gas: level 2) for approx. 1 hour. Remove the cake from the oven, place on a cake rack and let it cool completely. Put red and green cocktail cherries alternately on wooden skewers and roll them in sugar. Cut the cake into pieces and decorate with one cocktail cherry skewer each