Wash the knuckle of pork. Peel and quarter 2 onions. Put both with bay leaf and peppercorns in a large pot. Cover with water, bring to the boil and simmer covered for about 212 hours
Peel and chop 2 onions and garlic. Heat the lard in a frying pan. Fry onions and garlic in it until transparent. Add sauerkraut. Season with pepper, cloves and juniper. Pour on wine. Bring to the boil and braise in the preheated oven (electric cooker: 200 °C/recirculating air: 175 °C/gas: level 3) for about 1 hour
After about 30 minutes add bacon, cooked sausages and about 3/8 l knuckle of pork stock to the sauerkraut and braise to the end. Add the knackwurst sausages about 10 minutes before the end of the braising time and allow to cook
Remove the knuckle of pork and bacon from the stock. Remove rind from the knuckle of pork. Remove meat from the bones. Cut bacon into pieces. Season to taste sauerkraut. Arrange everything and sprinkle with parsley. Serve with boiled potatoes and mustard
Drink: cool Riesling, for example from Hugel and Fils