I have a heavy crystal decanter I’ve been using for years. A while back I was having some guests for a week, and thought I’d save some money and grabbed a bottle of Jim beam to put in it, as opposed to the higher end I tend to go for, because none of my guest cared about Bourbon. I noticed the level going down further than I had consumed. This has never been an issue before, so I figured someone had just nipped it while o was asleep. The next day, there was condensation on the inside, and the level had dropped further.
Since I’d been using the decanter for so long, I assumed the frosting on the stopper had rubbed off and it no longer sealed.
When it was empty, I refilled it with larceny, my standard, and to my surprise, it didn’t evaporate at all for weeks.
Last night, I refilled it with beam again, and this morning, it had dropped and there was condensation on the side.
What really confused me, is Jim beam has a lower alcohol content than the Bourbons I usually fill the decanter with, so I would think it would evaporate as readily.
Why does only this one brand evaporate?
Quick searching gave me no results
Tldr: Why does Jim Beam evaporate in my decanter while nothing else does?
WTF? Just as an experiment get a bottle or jar or something and fill it about one fifth of the way up with water then screw the lid on tight. Now leave it somewhere like a windowsill where the temperature will fluctuate a bit. I can’t speak for your climate but in most places the liquid water will evaporate bit during the day and then the trapped water vapor will condense on the inside of the bottle overnight.