Combine the marinade ingredients together and pour over the lamb leg steaks, making sure they are covered in the liquid.
Cover the dish and leave to marinade in the fridge for 15-20 minutes.
Cook the steaks on a prepared barbecue or preheated moderate grill for 6-8 minutes on each side, or until any meat juices run clear. A digital thermometer will read 71 C when the meat is cooked.
Transfer the cooked steaks to a warm plate and leave to rest a few minutes.
Serve wtih a fresh cherry and bean salad made with mixed beans, cherries, finely sliced red onions, baby spinach leaves and a light dressing.