Dice the ham. Wash chervil and parsley, dab dry and chop. For the dough mix flour, baking powder and salt. Add quark, oil and 7 tablespoons of milk. Mix to a smooth dough with the dough hooks of the hand mixer.
Cut the dough in thirds. Set aside 1 tablespoon each of ham, herbs and fried onion. Knead the remaining ham under 1 third of the dough, under the 2nd herbs and under the 3rd fried onion. Divide each third of the dough into eighths and roll out strands about 1 cm thick and 20 cm long.
Twist 2 strands each to a cord and form a ring. Place rings on 2 baking trays lined with baking paper. Mix egg yolk with 2 tablespoons of milk, brush rings with it and sprinkle with ham, herbs or fried onions, depending on the contents.
Bake the trays one after the other in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 10-15 minutes. For Easter breakfast serve colourful eggs in the rings. Serve with butter.