First soak ramja for 4 to 5 hours

Then take tamarind put water and keep for half hour

Then take cooker put ramja and cook for 4 whistles.

Then after that put oil, tamarind, red chilli powder, coriander powder, salt, haldi powder, garam masala then mix it well then put chopped coriander

Then cook for 1 whistle time and tamarind rajma is ready to serve