Method

1. 1
   Remove strings and flatten out lamb. Place boneless leg of lamb into a shallow dish and add the marinade ingredients - thoroughly combine together, cover and place in fridge for 1 hour.
2. 2
   Remove from the marinade and thread metal skewers crisscrossing through the meat to keep flat.
3. 3
   Cook on a lidded or covered barbecue - place flat onto the barbecue grid (not too close to the coals) turning frequently for about 40 - 50 minutes.
4. 4
   Alternatively place directly onto the shelf in a preheated oven (gas mark 4-5, 180°C, 350°F, place a tray underneath to catch the drips) for about 40 - 50 minutes until browned on the outside and still a little pink in the centre.
5. 5
   Take reserved marinade and boil thoroughly until thickened slightly - about 5 minutes, and serve drizzled over the lamb. Serve with Chinese stir-fry vegetables.