For the sauce, clean or peel and wash the soup greens and cut them into pieces. Wash chicken wings, dab dry, cut in half at the joint. Heat oil in a pot. Fry the soup greens and chicken wings for 3-4 minutes while turning.
Add the tomato paste and sweat for 1-2 minutes. Deglaze with about 1 litre of cold water. Add laurel, cloves, some salt and juniper, bring to the boil. Let simmer for about 1 hour at low heat. Cut off bread crusts.
Cut bread into cubes. Heat 1 tablespoon of butter in a frying pan and fry the bread cubes for approx. 4 minutes while turning them until crispy. Wipe out the pan. Cut bacon into fine cubes, fry until crispy in the pan and remove.
Wash parsley, shake dry, pluck leaves from the stalks and chop finely. Mix the bread croutons, parsley and bacon. Form dumplings into 12 dumplings of the same size and fill with the crouton mixture.
Cover dumplings with damp kitchen paper and chill. Wash the meat, dab dry and scratch the skin into strips. Heat a pan without fat. Fry duck breasts on the skin side for 4-5 minutes until brown.
Turn the meat, fry for 1-2 minutes more. Season with salt and pepper, place on a baking tray and cook in a preheated oven (electric cooker: 100 °C/ convection oven: 75 °C/gas: not suitable) for approx. 30 minutes.
In the meantime take chicken wings from the brew. Pass the brew through a sieve into another, wide pot. Remove 8 tablespoons of brew and set aside. Pour the duck fat out of the pan, except for a little bit. Heat the frying pan again.
Caramelise 1 tablespoon of syrup in it. Deglaze with vinegar and 3 tbsp. stock. Add to the rest of the brew in the pot and reduce to about 400 ml over high heat. Prepare dumplings in boiling salted water according to package instructions.
In the meantime peel the onion and cut it into strips. Quarter the apple, remove seeds and cut into slices. Heat 1 tablespoon butter in a pot. Sauté onion and apple. Add cabbage, bring to the boil while stirring and simmer for about 15 minutes.
Stir apple juice and 1 tbsp. starch until smooth. Stir into the simmering cabbage. Bring to the boil again and simmer for about 2 minutes. Stir 5 tbsp. stock and 2 tbsp. starch until smooth. Thicken the boiling stock with it, season to taste with salt, pepper and possibly syrup.
Cut the meat into slices. Arrange cabbage, dumplings, meat and some sauce on plates.