In a bowl, mash together the boiled potatoes, cooked rice, and one egg. Add pepper, salt, and chopped coriander. Mix well.
Shape the mixture into small round, rectangle, or square cutlets. Heat ghee in a pan.
Dip each cutlet into the remaining beaten egg. Place the cutlets in the pan and cook for a few minutes.
Flip and cook until golden brown on both sides. Serve hot with tomato sauce.