It's quick to make and doesn't rely on hard to find fresh seafood, the supermarket seafood mix (prawns, mussels, squid) is quite good enough - although if you are lucky enough to have some then use that by all means. I am convinced that a little bit of alcohol really brings out the best in tomatoes, here I've found another use for that bottle of Vermouth lurking in the cupboard (that way you can claim it is for cooking and not for those late night dirty martinis…).