Fish kuzambu/ stew without coconut

This is my mother in law's super easy and healthy fish gravy. It's very tasty with white rice, fried fish, veggie poriyal and curd :) When she visited us she made this and ever since this is our fav. fish dish. 

Ingredients: 

2                                 (each 6 oz/ 170 grams) fish fillets

1 tsp                           tamarind paste

3-6 tbs                         oil

salt to taste

To grind:

1 1/2 med sized            onion (finely chopped)

4                                  green chillies

2 clove                         garlic (chop)

1 med                           tomato

1/2 tsp                          turmeric pwdr

1/2 tsp                          coriander pwdr

1 tsp                             cumin/ jeera pwdr

5-6                                curry leaves

To season:

1/2                                 thinly sliced onion

2                                    green chilli

1-2 tsp                            chilli pwdr

1 tsp                               whole cumin, mustard seeds, methi/ fenugreek seeds

Method:

1. Clean the fish with a little turmeric, grind the ingredients given under-"to grind" to a fine paste with little water.

2. Heat oil in pan, fry the whole spices given under "to season" in low flames till it get's aromatic.

3. Add onion and curry leaves and fry till it becomes golden brown.

Add chilli pwdr and stir it few times with the oil. 

4. Combine the ground onion mix with the onion masala in the pan, add 3 cups of water.

5. Increase the flame to med/high, when the stew starts to boil, add the fish and let it boil for 5 mins, reduce the heat and let it simmer until you get your desired consistency.

6. Add tamarind paste and salt.

7. Let it sit for  afew hours, before serving with rice.