By Neil Perry
Quick and easy — the most important thing about this dish is to get good-quality prawns. You could use chopped lobster or crab for this if you really wanted to spoil your dinner guests.
Put the prawns in a large shallow heatproof bowl. Mix the marinade ingredients together with 2 tablespoons water and pour over the prawns.
Put the bowl in a large bamboo steamer over a pot or a wok of rapidly boiling water, cover with the lid and steam for about 8 minutes, o