Wash the lamb and dab dry. Season with salt and pepper and fry in 2 tablespoons of hot oil for 10-15 minutes. In the meantime, clean the fennel and keep the fennel greens. Wash the fennel and cut into cubes. Cut tomatoes into thin strips. Remove the meat from the pan and wrap in aluminium foil. Heat the remaining oil in the frying fat.
Add fennel and sauté. Add white wine and cook for about 8 minutes. Add tomato strips and olives. Season to taste with salt and pepper. Chop the fennel greens and sprinkle over the vegetables. Cut the lamb open and arrange on plates with the vegetables