Wash the leg of lamb, dab dry and rub vigorously with salt and pepper. Place in a casserole dish. Wash the tomato and parsley. Peel carrots and onions. Wash the carrots. Cut the vegetables into small pieces.
Chop the parsley. Dice bacon. Place everything around the leg of lamb. Pour red wine. Put the meat in the oven (electric cooker: 200 °C/ gas: level 3) and let it stew covered for about 1 hour. Pour roasting liquid over the meat from time to time.
Peel and chop the garlic. Mix with oil and herbs. Spread the herb mixture over the leg of lamb. Bake in the oven without lid for another 40-50 minutes. Remove meat and keep warm. Sieve the roast stock, fill up to 3/8 litres with water.
Stir the flour with a little water until smooth, add to the roast stock and let it boil down slightly for about 5 minutes. Season the sauce with spices and serve with the leg of lamb. Serve with boiled potatoes and green beans.