Soak tamrind in water for half hour. Then mash it properlly, take out tamrind and in tamrind water add jaggery to it.

Put it on gas and add black salt, salt and dates to it let it boil for 3 min. Ready to serve

For red chutney: Take tamrind put it in water and then mash it with hand. Now add jaggery, dates,salt and black salt in it let it boil on hight flame for 5 min.