>>/82722/
Belgian ales are strong, and winter ales or Christmas ales, are always even stronger due to the sweet seasoning used, giving the yeast even more to work with.
The strongest in this Christmas calendar, was at 12% VOL.
Got a double-mashed stout resting in my dad's basement, which has also fermented on Bourbon caskets. It's at 16% VOL, so even above red wine.

You can shut them tight again. Just requires some equipment.
Homebrewers bottle their own after all~
But don't. A beer's worst enemy, is oxygen. It's just as bad as direct sunlight

 >>/82723/
Too many posters here out and about