Mix 225 g flour, baking powder, sugar, vanilla sugar and 1 pinch of salt. Add milk, 50 ml oil, egg and quark. Knead to a smooth dough with the dough hooks of the mixer. Form into a ball, wrap in foil and chill for about 30 minutes.
Meanwhile wash, halve and stone the cherries. Stir the jam until smooth and mix in the cherries. Oil a springform pan (26 cm Ø) and dust with flour. Preheat the oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see below).
manufacturer). Roll out the dough rectangularly (approx. 30 x 40 cm) on some flour. Spread the cherries on top and leave a margin of about 1 cm all around. Roll up carefully from the long side. Cut into 12 slices of equal thickness.
Place them in the mould with the cut surface facing upwards, side by side. Bake in a hot oven for 20-25 minutes. Remove from the oven and allow to cool for about 30 minutes.
Mix icing sugar and lemon juice to a thin icing. Dribble over the warm cake and let it cool down.