Knead flour, icing sugar, butter in pieces, egg yolk, salt and 1-2 tbsp. cold water to a smooth shortcrust pastry. Grease a springform pan (26 cm Ø) and sprinkle with semolina. Roll out the shortcrust pastry, line the bottom of the springform pan with it and prick several times with a fork. Chill for about 30 minutes.
Separate eggs. Mix quark, 150 g sugar, pudding powder, egg yolks, vanillin sugar, lemon juice and oil. Add milk bit by bit while stirring. Pour the liquid mixture onto the cooled short pastry base. Bake in the preheated oven, bottom shelf (electric oven: 175 °C/ convection oven: 150 °C/ gas: level 2) for 45-50 minutes.
Beat the egg whites until stiff, then pour in 100 g of sugar. Take the cake out of the oven and spread the meringue on top so that an approx. 1 cm wide edge remains. Bake for another 20 minutes. Remove the meringue from the finished cake with a knife.
Pierce many times with a fork or a small wooden skewer so that the gold droplets come out when cooling down. Leave the cake to cool in the mould on a cake rack for at least 6 hours, preferably overnight.