Another way is- fry some diced red onions till golden brown (add some white wine now agakn). Add ginger till brown. Add gralic and some red tined tomatoes for colour. I usually fry some finely chopped red chillies before the onions but this is for the big chilly eaters. Once you've got a nice sauce simmering, add coconut milk and continue cooking the sauce for 8-10 ins. Add prawns until they curl and garnish with coriander.