Drain the cherries well in a sieve. Mix quark, 7 tablespoons of milk, oil, sugar, vanillin sugar and salt. Mix flour and baking powder and add. Knead everything with the dough hooks of the hand mixer to a smooth dough.
Then knead briefly with your hands. Roll out the dough on a little flour to a rectangle (approx. 37 x 47 cm). Spread the cherries evenly over the dough, leaving a 1.5 cm wide edge on the long sides.
Press the cherries lightly. Separate the egg. Beat egg white. Coat free edges with it. Roll up the dough firmly from the long side and press down gently. Cut into 12 triangles. Line a baking tray (approx. 35 x 40 cm) with baking paper.
Place the bobbes standing on the baking tray. Whisk the egg yolk and 1 tablespoon of milk. Coat Bobbes with it. Sprinkle with sugar crystals and almonds. Bake in a hot oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes.
Let it cool down. Dust with icing sugar. Serve with vanilla yoghurt.