Despite the name, most 'Dublin Bay prawns' sold today are caught well beyond Dublin Bay itself — the name stuck from when the old fish markets first popularised them.
These langoustines are simply boiled or grilled and served with brown bread and butter or a squeeze of lemon, letting the sweet, delicate meat speak for itself. Dublin's fish stalls and seafood shacks sell them by the bag, shell-on, for cracking and eating by hand.