1. Wash , boil , peel and cut potatoes into small cubes .
2. Roast coriander seeds , fenugreek ,split black gram and red chillies .
3. Grind coconut and turmeric along with roasted spices .
4. Heat half the oil. Fry potatoes ,add ground spices ,tamarind pulp and salt and cook on a slow fire till the spices are cooked and gravy is thick . Remove from fire .
5. Heat remaining oil . Add finely chopped onions . When fried ,pour over potatoes .