For gravy : 1 chopped onion, coriander seeds, cumin seeds, 2 green chilli, black pepper seeds, ginger and garlic pods.First wash the prawns twice and thrice with haldi powder and salt.then take out the head.Heat mustard oil in kadai.Fry prawns head with haldi powder and salt.till it is light brown in color. Once it is done.keep aside...

In the same Kadai add little oil. Fry cumin seeds and add the masala paste.Fry till the raw smell of masala goes off.

Then add fried prawns head.Mix.Add a little water.Fry in slow flame till it is dry.in consistency... Then add a little salt... Mix...

Sprinkle chopped coriander leaves.Serve.with.steam rice...