Onions peel and roughly chop. Dab meat dry. Heat oil in a roasting pan. Brown the meat in it. Add onions and fry for about 3 minutes. Season with salt and pepper.
Deglaze with broth, bring to the boil and cook covered for about 1 hour. Cut turnip into thick slices, peel and dice. Peel and wash carrots and potatoes. Potatoes in thick slices, cut carrots into pieces.
Wash the marjoram, shake dry. Remove the leaves and put something aside for garnishing. Add the vegetables and marjoram leaves to the meat about 30 minutes before the end of the cooking time. Season again with salt and pepper.
Put turnip stew in a bowl and garnish with marjoram.