In a small bow, add Kashmiri chili powder, coriander powder, pandan leaf, turmeric powder, fenugreek seeds, black pepper and cumin powder.
Use a clay pot for a smoky flavor, heat oil on medium/high flame, add mustard seeds.
When it starts to sizzle, add the fennel and cumin seeds, sun-dried red chili pepper, minced ginger and garlic, as well as sliced onions. Sauté until onions soften and turn to a golden color.
Stir in the curry leaves and green chilies. Add the tamarind pulp, a piece of gamboge, the spice mix, as well as the water.
When it starts to boil, add the fish. spreading them evenly to cook on both sides. after 3-5 minutes for cooking, add coconut milk and salt.
Reduce heat and let it simmer until the gravy thickens and the oil seperates. Add coriander and mix to enhance the aroma.