Wash the seer fish and keep it aside.
Heat a tadka pan and dry roast curry leaves, garlic and spices till nice aroma is released.
After the spices cool down, using a mortar and pestle grind these spices by adding 2 teaspoon oil. I tried grinding it in mixer but since the spice quantity was very less the spices did not grind well.
Now add tomato, tamarind along with the water in which it was soaked, the ground spices, ginger garlic paste, turmeric powder, red chili powder and salt to a mixer.
Grind it into a thick paste. The paste will be dark brown in colour.
Check salt and add more if needed and mix well.
Smear each seer fish steak with this spicy paste on both sides. Be generous while smearing the paste. Let it be thick.
Marinate this for at least 20 minutes.