Heat the oil and sauté the onions. 2 1⁄2 Pour on 2 l water and bring to the boil. Meanwhile wash meat and parsley. Pluck the parsley leaves and put them aside. Put stems, meat, spices and 2 1⁄2 teaspoons of salt into the pot.
Simmer open for about 2 hours.
Clean the Brussels sprouts, carve them crosswise, wash them. Peel, wash and chop turnip, carrots and potatoes. After about 1 1⁄2 hours remove parsley stalks. Add vegetables, potatoes and sausage and finish cooking.
Chop parsley leaves. Remove the meat, remove from the bone and dice. Add again, possibly heat up again. Season to taste with salt and pepper. Sprinkle stew with parsley. Serve with mustard.
Drink tip: Beer, e.g. a light, tangy lager.