Peel, wash and chop the turnip, potatoes and carrots. Peel and finely chop onions
Heat 2 tablespoons of oil in a large pot. Brown the onions, potatoes and vegetables in it. Season with salt, pepper and marjoram. Deglaze with a good 1 l water, stir in broth. Bring to the boil, cover and cook for about 20 minutes
Dice bread. Roast in 1 tablespoon of hot oil in a coated pan, remove
Remove 1/3 of the potato and vegetable cubes. Mash the rest in the stock. Add orange juice and bring to the boil. Season soup with salt and pepper. Add vegetable and potato cubes. Arrange soup with sour cream and bread cubes and garnish