These grilled seafood skewers pair meaty monkfish chunks with tender tiger prawns. Sturdy rosemary sprigs replace traditional metal or wooden skewers to infuse the fish with a deep herbal aroma from the inside out. A bright citrus and garlic marinade seasons the seafood before it hits the hot grill. The dish is finished with a rich, glossy homemade lemon aioli. It makes an excellent centerpiece for a summer barbecue or a relaxed weekend dinner.