Knead the sausage mixture and chopped parsley and form nut-sized balls out of it. Whisk egg yolks with milk.
Knead the dough ingredients into a dough and roll out about 3 mm thick on a floured surface. Cut out the same number of stars with large and small star cutters. Brush the large stars with egg yolk and flatten a meatball on top. First brush the small stars with egg yolk from below and press the large star and then brush the top with egg yolk as well.
Bake at 170 ° for 10-12 minutes.
Mix the mustard and sour cream together and place a swab on the cooled stars.