When coconut's colour turns golden and add red chillies and coriander.
Roast till nice aroma of the ingredients ejected from the mixture.
Let this mixture cool and after that grind this mixture in a mixer along with turmeric powder and 2 tablespoons of roasted dried prawns.
Take a mud pot and transfer the remaining prawns, mango and drumstick cut into pieces, ground masala, shallots sliced lengthwise & enough salt.
Add enough water and cook, closing the pot with a lid till the ingredients cooked - that is almost 10 minutes.