For the short pastry base, knead flour, baking powder, fat, sugar, vanillin sugar, salt and egg to a smooth dough. Cover and put in a cool place for about 30 minutes. Grease the bottom of a springform pan (26 cm Ø) and dust with flour.
Roll out the dough on it. Prick the dough base several times with a fork. Place the rim of the mould around the base. Pre-bake in the preheated oven (electric: 200 °C/ gas: level 3) for approx. 15 minutes. Let the base cool down on a cake rack.
Separate the eggs for the topping. Mix fat and sugar until creamy. Stir in egg yolk and fine lemon peel. Stir in quark, cream and starch. Beat the egg whites until stiff and fold into the quark mixture with the raisins.
Pour the mixture onto the base and bake in a preheated oven (electric: 175 °C/ gas: level 2) for approx. 1 1/4 hours. Remove the cake from the forming wheel with a sharp knife. Turn out in the form onto a cake rack and let it cool down.
Dust with icing sugar. Makes 12 pieces.