Heat the pan to the chopped yam with enough water , 1 tsp of turmeric powder, salt req for about 10 minutes. Drain off the water and rinse them well under running water.
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Take a blender, add soaked moong dal, 2 green chillis, 1 inch ginger, 4 garlic pots and grind it.
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Ground mixture transfer to a bowl, add boiled yam and coat it well.