First take 1 papad get it soaked in water for 2 to 3 seconds in a bowl.Then fry it directly into the oil till the papad is done.Then keep it aside and take a small bowl or katori and shape the fried papad into a bowl shape.Keep it aside.
Meanwhile mix all the above ingredients together and fill it into the bowl shapec papad.
Follow the same procedure with the other papad and stuff it with the filling.
Garnish the katori with lime juice and coriander leaves.
Your katori chaat is ready.
In case if the papad breaks you can microwave the papad.