Onions peel and cut into slices. Peel and core apples and cut them into slices. Sprinkle with lemon juice immediately
Heat the oil in a wide frying pan. Fry the onion and apple slices for 2-3 minutes. If necessary take out some apple slices for garnishing
Pluck the sauerkraut a little bit apart. Add peppercorns and bay leaf and braise for about 5 minutes. Pour on apple juice
Wash the smoked pork loin, pat dry and place on the sauerkraut. Braise in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for approx. 2 hours. Cover after 13/4 hours if necessary. Leave to rest for approx. 20 minutes in the switched off oven
Remove meat from the bone and cut into slices. Arrange on the sauerkraut. Garnish with apple slices and parsley. Boiled potatoes taste good with it