It is best to peel and wash the potatoes the day before and cook them in salted water for about 20 minutes. Press them hot through a potato press. Let them cool down.
For the peach ragout, wash, halve and stone the peaches. Caramelise 100 g sugar until golden yellow. Place the peaches on top. Deglaze with liqueur and simmer for 5-8 minutes.
For the plum ragout, wash the plums, cut them in half and stone them. Caramelise 100 g sugar until golden. Deglaze with port wine and boil off. Add the cinnamon stick and plums and simmer for 8-10 minutes, then let it cool down.
Mix the sour cream, icing sugar and vanilla pulp.
Separate the eggs for the legs. Mix potato mixture, quark, flour, baking powder, 60 g sugar, vanilla sugar, 1 pinch of salt, egg yolk and raisins. Beat egg white and 30 g sugar until stiff, fold in. Pour into a disposable piping bag.
Heat butter in a frying pan. Pour in small thalers and fry them on both sides until golden brown. Serve with the fruit ragouts and sour cream.