Healthy Fish curry

Healthy Fish curry
Ingredients
1. Fish – 8 to10 curry sized pieces ( I used 1.5 lbs of Seer Fish/Ney Meen)
2. Turmeric Powder – 1/4 tsp
3. Lemon Juice – 1 tbsp
4. Kudam Puli (Gambooge/Fish Tamarind/Malabar Tamarind) – 3 or 4 small pieces
5. Finely Sliced Shallots/Pearl Onions – 6 to 8
6. Slit Green Chillies – 4
7. Minced Ginger – 2 tbsp
8. Minced Garlic – 2 tbsp
9. Curry Leaves – A sprig
10. Fish Masala Powder – 2 tbsp
11. Kashmiri Chilly Powder – 1 tbsp
12. Coriander Powder – 1 tbsp
13. Fenugreek Powder (Uluva) – 1/4 tsp
14. Oil – 2 tbsp
15. Water – as required
16. Salt – to taste
For Marinating
1. Fish Masala Powder – 1 tbsp
2. Ginger Garlic Paste – 1 tbsp
3. Red Chilly Powder – 1 tsp
4. Salt – to taste
Preparation Method
 Wash and clean the fish fillets. Add a pinch of turmeric powder and 1 tbsp lemon juice to water and soak the fish fillets for 5 minutes. Drain and keep aside.Prepare a marinade using the above ingredients and rub it on the fish. Meanwhile peel the shallots and slice it into small round pieces. Soak the tamarind pieces in a cup of warm water. Heat 2 tbsp oil in a deep pan. Add the shallots and saute for a while. Add curry leaves, green chillies, ginger and garlic and saute. Make a paste using chilly powder, fish masala powder and coriander powder adding very little water. Reduce heat and add the paste. Stir for 3-4 minutes until the raw smell disappears. Sprinkle 1/4 tsp fenugreek powder and stir. Add the fish tamarind (kudam puli) pieces along with half of the tamarind water.  Add 2 more cups of water and little salt.Increase heat and bring the gravy to a boil.   Reduce heat to medium and add the fish fillets along with the marinade. Cook uncovered for 15 minutes swirling the pan occasionally.Switch off the stove and cover the pan. Keep this fish curry for atleast 6-7 hours before serving, so that the fish absorbs all the flavors. You can remove a few pieces of kudam puli if you find the gravy to be very sour.