Toss prawns with turmeric, chili powder, and salt. Set aside for 15 mins.
Cook the Base Masala
Heat oil + ghee in a heavy pot. Add sliced onions and sauté until golden. Add green chilies and ginger-garlic paste.
Add tomatoes and coconut. Cook till soft and masala is thick.
Spice It Up
Add goda masala, salt, and kokum. Stir for 1–2 minutes. Add marinated prawns and cook just until they turn pink.
Add Rice ' Cook Together
Add soaked rice and 2 cups water. Mix gently. Bring to a boil, then cover and simmer on low till rice is fluffy and moisture is absorbed (about 12–15 mins).
Rest ' Serve
Let the bhaat sit for 5 minutes before fluffing. Garnish with coriander and a drizzle of ghee if desired.