south indian style spicy cat fish curry !!!

Ingredients

• FOR MARINATING ;
• 6 slices cat fish (with bone, skin removed)
• 1 teaspoon turmeric, ground
• 1 teaspoon salt
• FOR DRY ROAST & GRIND INTO PASTE ;
• 2 tablespoons dry coconut
• 1 1/2 tablespoons sesame seeds
• 1 teaspoon fenugreek seeds
• 1 tablespoon groundnuts
• FOR GRINDING ;
• 1 large red onion
• 1 large tomato (ripen / canned / paste)
• 6 cloves garlic
• FOR TEMPERING ;
• 2 tablespoons oil - 2 tbsp
• 1/2 teaspoon mustard seeds
• 1 teaspoon cumin seeds / jeera
• 1 stalk curry leaves
• 1 teaspoon turmeric powder
• 1 medium onion (chopped finely)
• 2 teaspoons red chili powder
• 2 teaspoons coriander powder
• 6 small green chilies (cut into half)
• 6 cloves garlic (chopped)
• 4 ounces tamarind juice (soaked in water & extracted)