When the pureed
is smooth, add turmeric, chili powder and salt.
Heat the sesame oil in a
wide-based saucepan until smoking hot.
Carefully put
in the ground ingredients (the hot oil will splutters violently).
Cover pan and
simmer the mixture, lifting the lid frequently to stir and scrape the
base of the pan with a wooden spoon.
When the
ingredients are well cooked and still sizzling, add ground cloves,
cardamom, fennel, potato and tomato and stir well.
Cook for 10
minutes with the lid on.
Add thin
coconut milk and gently simmer uncovered for 10 minutes, then add
prawn and thick coconut milk and simmer, stirring frequently until
prawn are cooked, about 3 minutes.
Add coriander
leaves and cook a further 3 minutes, then remove from heat and stir in
the spring onion.