You still need a roasting tube. Dice the paprika, Emmental and onion and then mix with the sausage filling.
A flexible surface, e.g., a baking mat, rub with oil and spread the mixture on it in a rectangular shape. Season the loin with salt and pepper and place in the center of the mixture. Now roll it up and simply put it in the roasting tube. Put a few slices of raw ham on top.
If you want, you can add carrots, peppers and onions to the roasting tube for your own sauce and let them cook. Then put it in the tube at 200 ° C and let it cook for about 1 1/2 hours.