Wash the leg of lamb, dab dry and rub with salt, pepper and thyme. Place in a roasting pan with olive oil, cover and bake in a preheated oven (electric range: 175 °C / gas: level 2) for approx. 2 hours. In the meantime, divide the garlic bulb into cloves, but do not peel. Peel the onion and cut into slices. Wash the bay leaf and dab dry. Add the garlic, onion, bay leaf and 200 ml lamb stock to the leg after about 30 minutes and braise. Wash and drain the tomatoes.
Wash the lemon, dab dry and peel half of the peel in fine strips with a julienne nipper. Cut the rest of the lemon into slices. 30 minutes before the end of the cooking time, place the lemon julienne and slices on the leg and spread the tomatoes around the meat. If necessary, add some stock and braise until done. Arrange leg and braised vegetables on a plate. Serve with warm baguette. (Remove the soft garlic cloves from the skin and spread on the baguette). Serve with a strong red wine