Hello Pete,
The moment you put your poppadum into the oil, approx 2 seconds
later just turn it over and fry it on the opposite side and spread the
edges flat with your tongs. While they are frying you can still change
the shape in the oil but once removed from the oil they go crispy.
Dont fry on the first side too long. Flip over VERY quickly!
Respectfully,
Barry.