Wash the meat, dab dry and season with salt and pepper. Heat oil in a casserole dish. Brown the meat all around. Clean, wash and roughly dice the soup greens. Add to the meat.
Add bread. Braise in a closed pot for about 1 1/2 hours. Occasionally pour on some red wine and broth. In the meantime clean and wash the sugar peas and cook them in boiling salted water for 5-8 minutes.
Drain the corn on a sieve. Remove meat from the pot and let it rest for 10 minutes. Pour stock through a sieve. Stir in sour cream and bring to the boil. Add the sauce thickener and bring to the boil again.
Season the sauce with salt, pepper and sugar. Heat the fat in a saucepan. Swirl sugar peas and corn in it. Wash and chop the parsley. Cut the roast open and arrange on a plate with vegetables.
Pour some sauce over it and sprinkle with parsley. Add the rest of the sauce extra.