Last night I heard shattering glass. Thinking a break-in was likely I
> grabbed my axe and phone, ready to investigate and deal with an intruder. I
> found the cold wine I had bottled exploded as it warmed.
>
> I don't like leaving air gaps when I bottle because it harms the wine. But
> now it seems some gap might be wise to handle temperature variations. Is
> there some rule for air gaps in bottling?
>
>