Dry fry the coriander, cumin, fennel and mustard seeds for 1 to 2 minutes, until the mustard seeds begin to jump. Grind together into a fine powder.
In a food processor grind the chilies, garlic, ginger (galangal), spring onions (shallots), lemongrass, coriander root and oil into a smooth paste. The photo shows a brilliant mini-food processor kit from Braun.
Cook the chicken over a medium heat until lightly brown.
Add the chilli paste and continue cooking for 3 to 4 minutes.
Add the ground spices and coconut cream, bring to the boil, and cook for a further 5 minutes.
Stir in the chopped coriander leaves and serve immediately on rice.