Kassler roast in aluminium foil tastes very juicy, is particularly tender and is guaranteed to succeed. Since the meat is already salted, no additional salt is needed for seasoning. Preheat baking oven to 200° C. Season the pork loin with pepper all around. Crush the juniper berries with a fork. Put the Kassler roast on aluminium foil. Add juniper berries. Close the aluminium foil tightly. Place the Kassler roast in aluminium foil on a baking tray. Bake on the middle rack for 45 minutes. Remains of the Kassler roast in aluminium foil also taste very good cold as roast cold cuts.