Hello Jeya!
As I was away from my residence for a long time, I couldn’t reply to yr query immediately.
There is no need to soak kollu prior to cooking. Just fry it for a few minutes till its colour changes lightly. Then wash it and then cook in the pressure cooker with enough water to 4 whistles. But if you soak it for a few hours before cooking, the result will be good. There is no need to fry it if you soak for 3 or 4 hours.
I regret for my mistake in the MALABAR PRAWN CURRY. Yes, you are right. It should be corrected as ‘shredded coconut’ instead of ‘shredded ginger’. Thank you very much for pointing out the mistake.