Cook a pudding from the pudding powder, 1 tablespoon sugar and 250 g cream, cover with cling film and let cool down a little. Separate the eggs and beat the egg whites with salt until stiff.
Beat egg yolks, sugar and oil until creamy. Add 100 g cream and stir in. Mix the flour, cocoa and baking powder and stir in briefly. Carefully fold in the egg whites.
Pour the batter into a greased springform pan. Stir the pudding until smooth and distribute it in blobs on the dough. Bake at 175 ° C (top / bottom heat) for approx. 30 - 35 minutes.
For the topping, mix the yoghurt with the powdered sugar, spread on the cake and bake for another 5 - 8 minutes.