This is amazing and could be revolutionary for waste reduction in at bars and breweries that serve bottles. Every time we find a new gadget, we like it better than the last.
Basically, this machine has a slot where you insert your bottle. A few seconds later, voila, sand. That sand is put back on beaches that are losing it. It also removes the silica, which is a hazard.
Drinking beer is the best thing you could ever do.
