My problem is that I have a 15L carboy a beer kit (Cooper's Irish Stout) that's supposed to be for 23L. I vaguely recall reading somewhere that I should leave about 20% headspace (so I'm only brewing ...
Most kit wines claim they're ready to drink in a month or two. I've found they're much better at 6 months or so. But when making wine from grapes, it seems everyone recommends aging at least a year, ...