Wow so I went down a rabbit hole today. When I traveled around India for around 4 months I never saw this made on gas. I did see it done on an open flame but it was never with gas. But YouTube is filled with tons of videos doing it at home on a gas stove. Which lead me down a rabbit hole of how bad it is to use gas flames for this stuff. That I actually think I will never make poppadoms on the gas stove anymore.
So then I asked my Indian co-workers who said they do sometimes use the gas stove to do some stuff but they avoid it as it’s not healthy. They said never finish things like roti on gas stove but they do things with eggplants (and some other vegetable) and peel them after. They said it’s better to use a fire and it tastes better.