Wash the meat, dab dry and rub with salt and pepper. Heat the oil in a roasting pan and fry the meat all around. Peel onions, cut into eighths and add to the meat.
Roast in the preheated oven (electric: 200 °C/ gas: level 3) for 2 hours. Peel, wash and cut the potatoes into eight pieces. Clean, wash and break the beans into pieces. After 11/4 hours, deglaze the roast pork with wine, soy sauce and 1/4 litre water.
Add vegetables and potatoes and continue cooking. Peel garlic and chop finely. Heat the fat in a pot and fry the garlic in it. Add jam and bring to the boil. Brush the roast 10 minutes before the end of cooking time.
Wash the parsley and cut into strips. Sprinkle roast with parsley and lemon peel before serving.