Marinate prawns in turmeric, red chilli powder, coriander+ cumin powder, ginger garlic paste and salt for thirty minutes.
Add some water and cook on medium heat till the prawns are almost cooked and the water has evaporated.
Remove the prawns and keep them aside.
In the same pan take a good amount of oil and saute lots of chopped onions and curry leaves. Cook them till the onions turn almost red. We want them at the sweetest can be.
Add some coriander powder, red chilli powder and turmeric. After mixing well add the prawns.
Combine them and garnish with fresh coriander leaves.