Wash the raisins, drain and pat dry. Chop the candied lemon peel a little finer. Line a baking tray with baking paper. Mix quark, milk, oil, egg, sugar and vanilla sugar. Mix flour and baking powder. Stir half of the flour mixture into the quark mixture, knead the rest into it with the dough hooks of the hand mixer. Knead in the raisins, almonds and candied lemon peel.
Halve the dough and form it into 2 rolls (each approx. 60 cm long) on a little flour. Braid" the rolls together to form a strand, place them on the baking tray to form a wreath and press the ends together. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for about 1 hour. Let the wreath cool down for about 10 minutes
Heat the jam and pass through a sieve. Coat the wreath with it and sprinkle with sugar crystals. Leave to cool completely