Prepare the Römertopf (in this case 28 x 18 cm; for the ingredients indicated, however, it should be slightly larger) according to the instructions for use. Remove the outer cabbage leaves. Cut cabbage into slices.
Cut up to the stalk, wash and drain. Peel and wash the carrots. Wash and clean the tomatoes. Cut both into pieces. Wash the smoked pork loin and dice it about 3 cm. Mix the prepared ingredients and fill into the pot.
Season with bay leaves, salt and peppercorns. Mix 375 ml water and tomato paste and pour into the Roman pot. Put the lid on and put into the cold oven. Switch on the oven (electric cooker: 200 °C/ gas: level 3) and cook for about 1 1/4 hours.