Make a dough from quark, 6 tablespoon milk, oil, sugar, vanilla sugar, flour and baking powder. Roll out into a rectangle (approx. 35 x 45 cm).
Mix the hazelnuts, sugar, bitter almond oil, egg white, half an egg yolk and water, spread on the dough, roll up and place on a baking sheet lined with baking paper. Close to a ring / wreath. Mix half an egg yolk with 1 tablespoon milk, brush the wreath with it. Cut about 0.5 cm deep and bake at 175-200 ° C for 30-40 minutes.