Wash and devein the prawns and smear with red chilli powder and salt. Set aside. Soak Posto for 30 mins
Make a paste of Posto with minimal water. Set aside. Chop onions and green chillies
In a wok heat oil and add kalonji and green chillies. When it splutters add chopped onions. When golden in colour. Set aside.
In another wok heat oil and fry the prawns for 2-3 mins. Set aside
In the same wok add Posto to the fried onions. Add little water if Posto is dry. Keep stirring until oil leaves surface
Add turmeric powder to the Posto. Stir well
Add a little more water to have a thick consistency, add salt and then add prawns
Once you have the desired consistency set aside. Enjoy hot with steamed rice
