Clean, wash and cut the leeks into rings. Peel, halve and slice carrots. Onions peel, roughly dice. Peel and chop garlic. Wash meat, dab dry, season with salt and pepper.
Measure the oven hose and close it on one side. Pour in prepared vegetables, bay leaf and juniper berries. Place meat on top. Pour on red wine. Close the hose. Prick 2-3 holes in the foil on top.
Place the tube on a baking tray and cook in a preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: see manufacturer) for approx. 1 1/2 hours.
Heat butter in a frying pan. Fry the potato noodles for about 5 minutes until golden brown. Remove the roast and vegetables from the oven hose and arrange with the potato noodles.