Melt the fat and let it cool down a little. Sort the blackberries, rinse cold and drain well
Mix quark, eggs, semolina, sugar, vanilla sugar, pudding powder, baking powder, lemon zest and juice with the whisk of the hand mixer. Then stir in the melted fat. Carefully fold the blackberries into the quark semolina mixture
Grease a springform pan (26 cm Ø) well and sprinkle with semolina. Fill the dough into the form and smooth it down. Bake in a preheated oven (electric range: 175 °C / fan oven: 150 °C / gas: level 2) for 60-70 minutes until golden brown
Let the cheesecake cool down briefly. Remove from the mould and allow to cool completely on a cake rack. Dust the cheesecake with icing sugar before serving