Warm up the milk. Crumble the yeast and dissolve in it. Put flour in a bowl. Add sugar, butter in flakes and salt. First stir in the yeast milk, then the egg with the dough hooks of the hand mixer. Then knead everything into a smooth dough.
Place in a bowl sprinkled with flour. Cover and leave to rise overnight in the refrigerator or in a warm place for about 30 minutes. Grease a springform pan (26 cm Ø). Dice the marzipan finely. Mix well with plum jam and sour cream. Roll out the dough on a little flour to a rectangle (approx. 30 x 42 cm). Spread the plum puree mixture over it, leaving a 3 cm wide rim all around. Roll up from the long side and cut into 14 slices (approx. 3 cm each). Place the slices in the prepared mould, cover and leave to rise in a warm place for about 30 minutes. Bake in a preheated oven (electric: 175 °C/ gas: level 2) for about 40 minutes. Allow to cool slightly and remove from the mould.
Roll out the dough on a little flour to a rectangle (approx. 30 x 42 cm). Spread the plum puree mixture over it, leaving a 3 cm wide rim all around. Roll up from the long side and cut into 14 slices (approx. 3 cm each). Place the slices in the prepared mould, cover and leave to rise in a warm place for about 30 minutes. Bake in a preheated oven (electric: 175 °C/ gas: level 2) for about 40 minutes. Allow to cool slightly and remove from the mould. Warm up the jam and pass through a sieve. Coat the cake with it. Finely dice plums. Sprinkle plums, pistachios and sugar crystals over the edge of the cake. Results in about 16 pieces
Warm up the jam and pass through a sieve. Coat the cake with it. Finely dice plums. Sprinkle plums, pistachios and sugar crystals over the edge of the cake. Results in about 16 pieces
waiting time approx. 12 1/2 hours