3 Tbs Vegetable oil
2 Medium onions, chopped
4 Garlic cloves, crushed
piece Fresh root ginger, peeled 2 1/2 cm (1 in) and finely chopped
6 Green chillis, halved and seeded
1 tsp Turmeric
2 tsp Ground coriander
1/4 tsp Black pepper
300 ml (10 fl oz) 1 1/4 cups Thin coconut milk
1 kg (2 lb) Cod steaks
450 ml (15 fl oz) 2 cups Thick coconut milk
1 tsp Salt
2 Tbs Lemon juice
1 tsp Sugar
1 Tbs Chopped coriander leaves