Tender lentils slow-simmered with warming turmeric, finished with a sizzling tarka of golden ghee, roasted cumin, and fresh coriander.
Rub the fish with turmeric and a pinch of salt; rest 10 minutes.
Heat the coconut oil and sauté the onion, ginger, and green chilies until the onion is translucent.
Add the thin coconut milk and salt; bring to a gentle simmer.
Slide in the fish and poach 8-10 minutes until just cooked and opaque.
Stir in the thick coconut milk, warm through without boiling, and serve hot with appam or rice.