1. Wash, peel and chop the yam into medium size cubes.
2. In a saucepan, add the chopped yam, turmeric powder, salt and water and cook until yam pieces are tender.
3. Drain and set aside.
4. Heat oil in a pan and add the urad dal, chana dal and mustard seeds.
5. Once they start to splutter, add the broken red chillies and curry leaves and fry for a couple of seconds.
6. Now add the tamarind extract and powdered jaggery to it and fry for a couple of minutes.
7. Then add the cooked yam and red chilli powder and mix very well.
8. Serve hot with rice, roti or dosa.

Recipe and image courtesy: Indian cuisine