Soak the kokum in 1 cup water for 15 min.
Heat oil, Put in Shallots, Ginger, Garlic, Coriander seeds, Red chilli and coconut. Fry everything until the shallots turn brown and grind them to a fine paste.
crackle mustard seeds and fenugreek seeds. Add in chopped onions and fry well. add broken green chilli and fry well.
Now to this, add the ground masala and mix well.
Soaked kokum added along with the water used for soaking.
Add turmeric powder, salt and mix well. close and cook for 5 min.
Open and put in fish pieces and cook in simmer while giving a gentle swirl in between.
close and cook for 5 more minutes or until the fish is cooked and let it sit in pot for at least an hour before you serve.