Bring 150 ml of water to the boil, pour over the sultanas and allow to swell for about 45 minutes. Afterwards drain on a sieve if necessary
Separate the eggs and chill the egg white. Wash the lemon thoroughly, grate dry and finely grate the peel. Squeeze the lemon. Place the pecorino cheese, egg yolks, 275 g sugar, vanillin sugar, semolina, salt, lemon juice and rind in a large bowl. Mix until creamy with the whisk of the hand mixer. Fold in sultanas. Beat the egg whites until stiff, adding 30 g sugar (approx. 2 tbsp.) at the end. fold in 2 portions of beaten egg whites into the quark mixture
Grease the oven pan (approx. 35 x 40 cm) well and sprinkle with breadcrumbs. Add the quark mixture, smooth it down and bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 1 hour. Then leave to stand in the switched off oven for another 5-10 minutes
Leave the cheesecake to cool in the fat pan on a cake rack for about 4 hours. Cut the cake into pieces and dust with icing sugar shortly before serving
waiting time approx. 4 1/2 hours