Clean, wash and roughly cut the soup greens into pieces. Peel onion. Put the soup greens, onion, bay leaf, cloves and peppercorns in a pot with 2-3 litres of water and bring to the boil. Put the meat into it and simmer covered over medium heat for 21/2 - 3 hours.
In the meantime clean and wash turnips and carrots. Dice the turnip and cut the carrots into slices. 20 minutes before the end of the cooking time, remove 1/2 litre of the meat stock. Bring the broth to the boil and cook the vegetables in it for 15-20 minutes.
Drain and collect the broth. Heat the fat in a saucepan and sauté the flour in it. Add milk and 1/4 litre of the broth. Simmer for about 5 minutes while stirring. Wash the chives, dab dry and cut into small rolls.
Add the vegetables to the sauce and season with salt and pepper. Remove meat from the stock, cut into slices and arrange on a plate with the vegetables. Serve garnished with parsley.