Mix egg yolk with sour cream, curd cheese, sugar, cornstarch, rum, vanilla sugar and zest. mix well.
2.
Beat egg whites, pinch of salt and 50 g sugar until stiff and fold into sour cream and curd mixture.
3.
Heat butter slightly in a non-stick pan. Pour in the mixture to the thickness of a thumb and fry lightly. Bake in a preheated oven with top heat (230 °C, approx. 4-5 minutes) until golden brown.
4.
Use a spoon to shred the baked Schmarren into small pieces and sprinkle with powdered sugar as desired.
Tip: Serve with apricot jam or plum roast.