Grind the grated coconut with 2 shallots, garlic, ginger, turmeric, chilli powder to a thin paste.
Add this ground mixture into a mud pot (chatti ). Add green chillies, chembu, pacha manga and allows it to boil .
When it starts to boil, add the fishes, cover and cook it in a low flame for 7 - 10 minutes.( check occasionally )
Heat coconut oil in a pan, splutter fenugreek seeds, fry the shallots, curry leaves and add this into the fish curry.
Mathi curry is ready to serve. It goes well with boiled rice. Enjoi.