In a mixing bowl, mix together the atta and salt. Add oil and rub it into the flour with your fingertips until well incorporated.
Start adding water little by little and knead to form a soft firm dough (slightly harder than chapati dough). Do not add too much water. Knead for 3-4 minutes.
Cover and let the dough rest for 10 minutes.
Divide the dough into lemon sized balls. Take each ball and roll out into small rounds using a rolling pin. Roll to about 4-5 inches in diameter.
Heat oil in a kadhai on medium heat. The oil should not be smoking hot.
Gently slide each puri into the hot oil one by one. Press it lightly with a slotted spoon so it puffs up.
Turn and fry until both sides are golden brown. Remove with a slotted spoon and drain on paper towels.
Serve the hot, puffed puris with a curry or sabzi of your choice. Enjoy!