Take a pan heat oil add cumin seeds when it crackle then add chopped onion 1 minute saute add green chilli coriander leaves, mango powder, salt mix well 2 minutes Cook. Keep aside take a pan add oil heat it.Take some dough roll it sprinkle some flour put in some potato mixture and roll it make a round shape. Deep fry in oil both of side good well. Ready to eat with Aloo ki sabji. And chutney.