fresh turmeric, do you really have to boil it before dehydrating and grinding it into a powder??
what is the reason for boiling it for 30 mins....??

I want to make my curry sauce as fresh as possible and make my own curry powder. (kari podi)

I know that turmeric has medicinal value to it and I DONT want to weaken it by cooking (until the actual moment of cooking the dish) if it is not necessary ....

So, what do real indian chefs do?
what do real indian grandmas do?

and WHY is the reason for boiling first if I truly must...?