Combine the olive oil, lemon juice, garlic cloves, fresh mint leaves, fresh rosemary leaves, ground black pepper and salt in a food processor until well blended.
Place the rack of lamb in a re-sealable bag and pour in the marinade over the lamb to coat it. Seal the bag and leave to marinate in the refrigerator for +- 4 hours.
Prepare your coals, they should be medium to high heat. Warm your Best Duty Multi Lid #12 for +-2 minutes and grease using non-stick grill spray.
Transfer the racks to your Multi Lid and grill each side for +-5 minutes.
Preheat your oven to 180 °C.
Transfer your Multi Lid to the oven and roast for +- 15 minutes. Cut each rack into 4 double chops and enjoy with veggies on the side.