Cooked in the shell for extra flavour ... grilled chermoula prawns.Marina OliphantIn Spain,prawns are often cooked and served in the shell,which retains a lot of their flavour. I think it is similar to cooking meat on the bone,which improves the moisture and taste of a dish. The prawns can be cooked on a grill,but for a true taste of summer,do them on the barbecue.