Heat the oil in a large wok or heavy-based saucepan.
Add the onion and fry until soft.
Mix the turmeric,
coriander, cumin and chili powder with the water.
Stir this spice mixture into the onions and cook for
about 3-4 minutes, until the liquid has evaporated.
Add the chicken and fry on all sides, then add the
tomatoes and salt to taste. Cover and cook for about
15 minutes.
Stir in the green pepper, garlic and
chilies. Cook, uncovered, until all the tomato
juices have evaporated and the chicken is cooked
through.
Serve hot, garnished with the tomatoes and
sprigs of coriander.