1. Grind togeather green chillies, ginger, mustard, coriander leaves and salt.

2. Clean and cut fish, Wash well.

3. Smear fish with ground ingredients.

4. Heat a little fat. Fry fish lightly. Remove.

5. Add more fat and remaining spice. Mix well.

6. Put fish in a pan, pour over the fat and spices, thick coconut milk and tomato sauce.

7. Add butter and allow to cook until tender.

8. Serve hot, garnished with peas or fried potatoes.