Mix sour cream, egg yolk, 2 eggs, 30 g sugar and starch. Wash and halve the nectarines, remove stones. Halve the halves again. Cream fat, 300 g sugar, vanillin sugar and salt with the whisks of the hand mixer. Stir in 6 eggs one after the other. Mix flour and baking powder and stir in alternately with the milk.
Spread the cake mixture on the greased and floured fat pan of the oven and smooth it down. Spread nectarine quarters on the dough with the skin side facing upwards and carefully pour the frosting on top. Bake the cake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 30 minutes. Remove the cake from the oven and let it cool down. Whipped cream tastes good with it