Mix flour and salt in a bowl.
Slowly add enough warm water form firm dough and knead till smooth.
Now cover and let it rest for at least 30 minutes.
Then knead again briefly.
Divide into small balls about golf-ball size and roll out into 15cm rounds on an oiled board.
Heat vegetable oil in a wok or saucepan.
Add a little salt to the oil to keep it from smoking.
Fry the Puri one at a time holding them under the oil on the first side until they puff.
Turn and fry till light brown.