Coconut shrimp is an American delicacy, and so I prefer to retain native terminology. I don't know why this should be, but I find it makes them sound much more delectable than prawns; shrimp is such a very good, juicy word. The rice flour I dredge the shrimp in makes the coconut adhere much better than the more usual plain flour, and it gives a crispness and light rustling crunch, in the same way the panko does, rather than regular breadcrumbs, and both offer a more resilient coating, so that the encased shrimp steam succulently within. For US cup measures, use the toggle at the top of the ingredients list.