First of all, add corn, cheese and onion in a vessel and mix well. Now add gram flour, green chilli, ginger and garlic paste, cumin powder, salt and chaat masala. After 5 minutes, add poha to the mixture and mix well. Now make small balls from this mixture and then press them lightly to make them flat. Then place the oil in a pot or pan on medium flame to heat it. After the oil is hot, fry the flat dough until it turns golden.