In article .com>,
wrote:

> A batch of red wine vinegar, made in 2002, was recently discovered to
> have large, tube-like growths inside ... the largest probably about
> 1.5" diameter, and nearly the length of the bottle.
>
> Any idea what this could be?
>

It's called Vinegar Mother and is a harmless fungal growth.
It can be used to make more vinegar from wine:

http://en.wikipedia.org/wiki/Vinegar_mother

Cheers!
--
Peace, Om.

"My mother never saw the irony in calling me a son-of-a-bitch." -Jack Nicholson