peel and grate potatoes
cut onion finely
put bread in a mixer and make a fine powder
now take a mixing bowl put potatoes, onion, and bread powder
now add in this salt, red chilly flakes, chaat masala and coriander leaves
now add corn flour and mix everything and collect like a dough
now take a plastic sheet grease with little oil
put that potatoes mixture on that and roll with a rolling pin
roll slightly thick then take a knife cut in strips or any other shape as you wish
put oil for frying in a pan and let it hot
now on full heat fry this potatoes finger turn it and fry from every side golden colour
when it is in golden colour remove it out and serve hot with tomato sauce