In a mixing bowl add Rajgira flour, salt and mix well. Add green chili paste, crushed cumin seeds, turmeric powder and mix it again.
Now take the boiled potatoes, peel the skin and mash it finely or you can grate it, then add into the Rajgira flour mixture.
Add salt and mix all the ingredients properly, knead it and make a dough. Add little water about 1 tbsp if required.
Keep the dough coved with cloth aside for 15-20 mins.
Now heat the oil in a deep pan for frying.
Take the dough and divide it into small sized balls (key lime size).
Take one ball, flatten it between your hand palms, dust it with dry flour and roll it into the circle/puri.
Use same method for remaining balls and roll out more Puris.
Now deep fry the rolled Puris one by one into the hot oil till puff and becomes golden brown both sides.
Drain it from excess oil using the slotted spoon and remove it on paper towel.
Rajgira Ki Puri is ready to serve. You can have it with fasting dishes like spicy peanut potatoes or fasting curries and enjoy the festival.