The looks reasonable.
But another thing I heard sometime back is that the leave helps in preventing Heart diseases.
They say with the heat from the food, the leaves release some stuff into which is really good for the body.
I think the next thing we should be looking at as engineers is, how can we convert the leaf material to replicate the aluminium or plastic package, probably in shape for convenience.
That's a good idea , engineering this will be great @anaman