Drain the water from the sardines.

Marinate the sardines with salt, cayenne pepper, paprika and turmeic.

Mean while, heat oil in a pan and add the mustard seeds. When they splutter, add the curry leaves and saute for a few seconds.

Now, add the chopped onions. You have to saute till the onions are light brown in color. You can sprinkle a pinch of salt to fasten this step.

When the onions are browned, add the marinated fish. Since the fish is already cooked, all it needs a stir for about a minute or two. Stir & mix everything well.

Garnish with grated coconut. Serve hot with rice.