Pour oil in a pan add sombu, curry leaves. After it splitters, add onion, sauté until it becomes skin color. Add chopped garlic, green chili, tomato puree, coriander powder. Boil for 2 minutes till oil gets separated followed by prawns and salt.
Cook for 1 minute then add the coconut milk and cook in low flame for 5 more minutes. Lastly add the chopped coriander leaves and close the lid and slow the fire and keep it 1 more minute. The oil gets nicely separated with rich flavors of coconut. Serve it with Nan’s, Rotis or even with Ghee Rice.