Found this on the net and made it for dinner tonight. It was fantastic! I bought shelled, deveined prawns, didn't bother with the salt bath and didn't pound the chillies. I also used regular basil as that's what I had. Said to serve 4 to 5 with rice and other dishes; two of us polished it off with rice. Recipe is from Dancing Shrimp: Favorite Thai Recipes for Seafood. Sauce can also be used on fish or substitute squid, scallops, shelled clams and mussels, or a combination of shellfish and mollusks for the shrimp.