Wash the meat, dab dry and rub with salt and pepper. Grease a roasting pan with oil and put the meat in it. Stick bay leaves into the rind. Pour on 1/8 litre stock. Roast in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 2 hours.
Pour in the rest of the stock little by little. In the meantime peel parsley roots and pumpkin. Cut the roots into thin slices and the pumpkin into cubes. Clean, wash and cut the leek into pieces.
Add the vegetables to the roast about 30 minutes before the end of the cooking time. Wash the marjoram, dab dry and put some stalks aside for garnishing. Remove the leaves from the remaining stems. Mix honey, vinegar and marjoram leaves and spread over the vegetables, season with salt and pepper and stir several times.
Serve the roast garnished with remaining marjoram.