Sieve besan / gram flour in a bowl.
Add cumin seeds, carom seeds, red chilli powder, kalonji and salt. Mix well.
Add oil and mix it with the other mixture well so that all looks like a breadcrumbs.
Knead a hard dough by adding water in it.
Keep the dough at rest for 10 minutes.
Take a ball out of dough and roll it like a thin chapati.
Prick the flattened chapati with the fork so that papdis shouldn't puff up while frying.
Mark the cuts in the rolled chapati with the help of round cutter or some glass or katori. Take out the extra dough from the sides.
Make more papdis with the entire dough by using same method.
Transfer a batch of papdis in hot oil for deep frying.
Once you put the papdis in hot oil, they will sink to the bottom. Don't disturb them. They will themselves start floating over the oil after couple of seconds.
Flip over the sides of papdis and fry them till they turn light golden brown.
Take them out and place on a plate carrying paper nepkin so that it absorbs extra oil.
Your besan Papdi is ready. Once they turn completely cool, transfer them to air tight container.