"put them inside the can. make sure it's covered well so they ripen faster."
that's my mom years ago telling me to put unripe philippine mangoes inside a full can of rice storage.
she, together with all my other superstitious relatives, thinks that placing mangoes in a tight storage can full of rice can make fruits ripe faster.
perhaps there is a high concentration of ethylene gas inside or maybe grains of rice speed up the ripening process. i actually don't know.
what i know is that fruits that are forced to ripe faster don't taste as good as the ones that ripe naturally.
i go natural.
if nature and all the other natural forces of this universe would all conspire to make the fruit ripe until 10,000 years, then so be it.