Heat the oil in a pot and fry the meat in it on all sides over a high heat. Peel and chop the onion, add to the meat and fry it. Season with salt and pepper. Deglaze with 1/4 litre of water and braise at low heat with closed lid for 1-1 1/4 hours.
In the meantime peel, wash and cut the potatoes into pieces. Drain the sauerkraut. 30 minutes before the end of the cooking time add potatoes to the meat and cook. Squeeze out the sauerkraut and add it together with the laurel, crushed juniper berries, peppercorns and tomato juice 20 minutes before the end of the cooking time and braise it.
Season again. Pour into a terrine and serve garnished with bay leaves as desired.