1. Soak tamarind in � cup of water and extract the juice.
2. Heat the oil in a kadai. Add mustard and fenugreek.
3. When they splutter, add curry leaves and green chilies. Fry for few seconds.
4. Add onion, fry till it is light brown. Add ginger-garlic paste, fry till fragrant.
5. Add all the powders and tomato. Cook till the tomatoes are reduced to a pulp.
6. Add shrimps and salt. Cover and simmer till prawns are cooked.
7. Add tamarind extract and simmer without covering fpr 5 minutes.
8. Serve with steamed rice, idly or dosa.

Serves: 6