Bengali Fish Curry Curry And Gravy Contest

Name: Bengali Fish Curry ( Curry And Gravy Contest )
Ingredients: 1. Seer / fish steaks 7; 2. mustard oil 3tablespoons; 3. Ajwain 1 tablespoon; 4. mustard seeds - 1 teaspoon; 5. green chilly 1; 6. onion ( medium) 1 finely chopped; 7. ginger garlic paste - 1 1/2 teaspoons; 8. Ripe big sized tomatoes 3 grated into purée; 9. salt 2 teaspoons; 10. turmeric powder 1 teaspoon; 11. Kashmiri chilli powder - 1 teaspoon; 12. chilli powder - 1 tablespoon; 13. curry leaves 20 leaves