Melt the fat and let it cool down a little. Knead flour, sugar, vanillin sugar and fat to a crumble dough. Lightly grease a springform pan (26 cm Ø) and press 2/3 of the dough into the pan as a base.
Pre-bake in the preheated oven (electric cooker: 200°C/ gas: level 3) for approx. 10 minutes. Wash the currants, drain well and pluck from the stalks, except for 2 panicles. Boil up 200 ml currant juice and sugar.
Stir starch and remaining juice until smooth. Add to the boiling juice and bring to the boil while stirring. Stir in 3/4 of the currants. Allow to cool slightly and spread on the pre-baked crumble base.
For the quark mixture, stir the fat and sugar until foamy. Add lemon zest, juice and eggs and mix. Finally, stir in the quark and pudding powder. Spread the quark mixture over the compote. Mix remaining currants and crumbles and sprinkle on the quark.
Bake in the preheated oven (electric cooker: 200°C/ gas: level 3) for approx. 50 minutes. Cover in between if necessary. Leave to cool completely in the mould on a cake rack. Place on a cake plate and decorate with the remaining panicles.
Results in about 16 pieces.