Peel and quarter 4 onions. Chop the plums coarsely. Peel garlic. Peel ginger and chop coarsely. Put red wine, onions, lemon juice, plums, garlic, peppercorns, juniper, bay leaf and ginger in a large roasting pan.
Wash the meat, dab dry and season with salt, pepper and paprika, place in the red wine mixture. Cover and let it stand in the refrigerator for about 2 days.
Peel and quarter 2 onions. Peel, wash and roughly dice the carrots. Take the meat out of the red wine and let it drain. Season with salt, pepper and cinnamon. Heat clarified butter in a roasting pan and fry the meat thoroughly while turning.
Add carrots and onions, fry briefly.
Pour red wine through a sieve, collect. Deglaze the roast with 300 ml red wine, cover and braise in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) on the lower rack for about 1 1/2 hours.
After about half the cooking time, add another 300 ml of red wine.
In the meantime clean the Brussels sprouts, carve the stem ends crosswise. Wash the sprouts. Cook in boiling salted water for 15-18 minutes. Meanwhile peel and finely dice 1 onion. Whip the cream. Wash parsley, shake dry and chop finely.
Melt the butter in a large pan, fry the onions in it over a low heat until transparent. Pour the Brussels sprouts into a sieve, drain and put them into the pan. Heat, swivel through and keep warm.
Remove the roast from the oven, take the roast out of the stock and keep it warm. Pour the stock through a sieve into a pot, bring to the boil. Add jam, cream, orange peel and season with salt and pepper. Let simmer for about 5 minutes.
In the meantime, cut the roast into thin slices, arrange on a plate with sauce and Brussels sprouts, sprinkled with parsley. Boiled potatoes taste good with it.