Barbecued Marinated King Prawns with Tarator

We are blessed with fantastic prawns (shrimp) in Australia. There are many different types and they range from cold and warm water species to farmed. I like to get really big specimens for this dish and cook them in the shell, cut in half like a lobster, but by all means remove the shell and just cook the flesh straight on the barbecue, particularly if you are having trouble finding really big prawns. The marinade will stick to the flesh and give the prawns an added burst of flavour. If mar