Peel the onions. Lard 2 onions with cloves. Clean, wash and cut 1 stick of leek into rings. Wash the meat, dab dry, rub with salt and pepper. Heat the oil in a frying pan. Brown the meat thoroughly all around.
Fry the spiked onions, bay leaf and leek rings in hot frying fat. Add meat, wine, 1/4 l water and stock and bring to the boil. Cover and braise in a hot oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for about 1 1/2 hours.
Remove the lid and braise for about 1 hour.
Cut 2 onions into cubes. Clean the rest of the leek, wash it and cut it into pieces. Peel, wash and chop the potatoes. Heat 2 tbsp. butter and lard. Brown onions and leek in it.
Add the potatoes and fry. Season with salt and pepper. Deglaze with about 150 ml water, bring to the boil. Simmer covered for 15-20 minutes. Season with salt and pepper.
Knead 2 tablespoons of butter and flour. Wash the parsley, put some aside for garnishing, chop the rest. Lift out the meat. Pour stock through a sieve and bring to the boil. Stir in flour butter, bring to the boil and simmer for about 5 minutes.
Season the sauce with salt and pepper. Arrange everything. Sprinkle vegetables with parsley.