Grease a springform pan (26 cm Ø) and sprinkle with semolina. Separate the eggs. Cream the fat, 100 g sugar and 1 packet of vanilla sugar. Stir in the egg yolks one by one. Stir in quark, lemon juice and zest. Stir in semolina and starch briefly. Beat the egg whites and 1 pinch of salt until stiff, adding 100 g sugar. Fold into the quark mixture. Spread into the mould. Bake in a preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for 1-1 1/4 hours (cover after approx. 50 minutes if necessary)
Let the cheesecake cool down for about 15 minutes. Then remove from the springform pan and let it cool completely on a cake rack
Roast the flaked almonds in a pan without fat and let them cool down. Whip the cream until stiff, while pouring in 1 sachet of vanillin sugar. Spread plum jam on the cheesecake. Spread the cream on top. Sprinkle with almond flakes and dust with a little icing sugar