1. Clean and wash prawns.
2. Heat oil in a kadai and saute onion.
3. When it turns brown, add ginger garlic paste and chillies.
4. Add tomatoes and the powders.
5. Stir till the tomatoes are cooked
6. Add vinegar, prawns and salt
7. Cook till done.
8. Garnish with curry leaves and coriander leaves.

Recipe and image courtesy: Friends Cookys