For preparing kerala brinjal prawns curry, soak brinjal in salt water. Drain brinjal after some time and fry it in oil.
Grind the ingredients for preparing masala.
Saute cinnamon, cloves and cardamom in oil.
Add oniion, ground masala and tomato. Fry well.
Add prawns, vinegar and fry again.
When oil clears, add the fried brinjal and curry leaves.
Cook in low flame for 5 minutes.
Kerala brinjal prwans curry is ready.