What do Wine Shop Owners do....

[quijote]

....with unsold wine? I figure that they reduce the price of wine in certain instances to sell the supply off, but what happens to wine that doesn't sell and that is in danger of going past its prime? Or wine that simply doesn't sell? Is wine ever thrown out??

I just got to thinking about this because of the practice that many grocery stores have of tossing out old food, filling behind-the-store dumpsters to the brim.