Street phuchka vendors in Kolkata (they are what you call golgappas in Delhi) will hand you bowls made out of sal leaves. I wonder if that's the same as what you came across?

https://billandpaige.files.wordpress.com/2014/06/dsc_6462.jp...

That looks vaguely right. I remember it being a bit more richer green look to it but the shape and everything looks about right.

Yeah, that's when they're fresh.

I think using dried leaves saves the trouble of having to pick them off the tree because they just fall to the ground, but I'm a city boy and wouldn't know for sure. Might have to ask my father! :)

I buy it on regular basis for religious functions as we don't use plastic in religious ceremonies to the extent possible. These alternatives are nearly 3 times more expensive and availability is a real issue. Not to mention the environmental impact of breaking branches of trees to get leaves quickly.

Yeah, many of bowls/plates are made up of mango tree leaves. All my childhood I have eaten village feasts on those leaves plates and earthen bowls for gravy/yogurt.