That does bring a funny idea to mind. If you repeatedly use the refilling charm on a bottle of wine, each time the wine will get slightly worse. Not just worse in the sense that it tastes worse each time, but worse in the sense that it will shift through a sequence of increasingly inferior wines.

I could see something like that fitting into to the pastiche flavoured magic Rrowling created.

 

Alternatively, it could result in a better wine.

If duplicated objects deteriorate faster, this seems to be saying that the natural ageing process is accelerated, and thus wear and tear, rust and decay etc. will magically accumulate faster than they would naturally.

But wine is different from most objects in that it improves with age (at least for certain types of wine). So you're basically speeding up the maturing process. Instant aged wine.

 

Barty Jr. certainly wouldn't have had to steal Polyjuice ingredients if he could have gotten a bottomless flask instead.

Though such deductions are not always the right answer. JKR's world is not that logical.

 

This sounds quite solid. Thanks once again, Taure!