Mix sugar and yeast in 1 teacup of warm water till the yeast gets dissolved. Cover the mixture for 5-7 minutes until froth appears in it.
Pour this liquid into the mixture of flour, curd, ghee and salt. Add some warm water to make the dough soft.
Knead the dough for 5-10 minutes.
Wrap the dough with a wet cloth for half an hour.
Again knead the dough for 1 minute.
Make 20 small pieces out of the dough and shape them into naans.
Smear a pressure cooker with a little amount of oil. Remove its lid and heat upside down.
Apply a little quantity of water onone side of naan and attach the wet side around the inner wall of the pressure cooker. Keep it until the brownish spots appear. You can put 3 to 4 naans at a time.