Earlier this month, I mentioned that the boy has taken on a homebrewing project of making cider. Unfortunately, I still haven't figured out the science of the art (or the art of the science?), but I've been promised that more brewing is to come in the fall. A larger apartment awaits us when we return to Montreal in September (yes, I've finished my finals for the semester!), so I'm hoping we'll manage to vent the system for beer (which will give off fumes more potent than those innocuous ones from the cider).
The cider bubbled incessantly for the first two days or so, and was quick to clarify - you can see the progression of quick change between days two and five:
The stuff still tasted acrid and sharp, but is exponentially mellowing. Now, we wait. It'll be worth it (hopefully) if we just forget about the bottles for a few months before 'rediscovering' the brew.