Dry roast the whole spices until lightly coloured and set aside to cool. Grind finely and stir in the chilli and nutmeg. It can be stored for up to 2-3 months in an airtight jar.
Cut the fish into bite-sized pieces, season with salt and pepper, and set aside.
Heat the oil in a heavy pan and fry the onion until golden. Stir in the massalé and turmeric and lightly fry. Add the pieces of fish, and all the other ingredients. Bring to a simmer and cook for about 10 minutes until the fish is ready.
Serve with rice.
Type the ingredients you want to use, then click Go. For better results you can use quotation marks around phrases (e.g. "chicken breast"). Alternatively you can search by chef, programme, cuisine, diet, or dish (e.g. Lasagne).