returning returnable bottles?

[aappaa]

I haven't been playing this game for very long but one thing I've noticed in all of my playthroughs is that there isn't anywhere to return bottles.
I probably just missed the location or it's not implemented yet but even when I look it up nothing shows. Help?

[Skrain]

You sell them to snack venders

[Regret]

Or in the supermarket.