
That is actually kinda funny.....

Well, while it 'might' be a KT SCOBY....it is more likely that you had a mother vinegar plant that was strong enough to survive the processing they do to prevent such things, as they really don't want you to be able to make your own! Guess you just need some apple juice and you are all set...though I've not brewed vinegar before! I've heard they look similar, but are more 'yeasty' than a KT SCOBY is. I actually just read something on this, and if I can get the time to look for it and find the actual info, I'll do so. If nothing else, your vinegar will have more 'nutritional' punch from the cross breeding....though without the sugars and such, it's not likely to affect your vinegar much.
The Kombucha can make vinegar like solutions given enough time, but it's an all together different 'animal' of brews, content wise.
I would bet your KT is still ok, but never add a 'live culture' vinegar to your Kombucha brews to 'kick start' it, like some suggest. Use a starter from a previous batch of Kombucha, even if you have to go buy a bottle of it from a health food store! I guess you could use some distilled white vinegar if you have to, as all chances of cultural contamination would be nill, from the sterilization of the vinegar.
I usually have a lidded glass jar for my water kefir, and that keeps them fairly 'safe' from flying around bits. My dairy grains have a lid also, but a few times a week, I brew them with only a birdseye cloth cover to allow breathing and 'milder' brews.
The Kombucha only has a one layer of birdseye cloth covering, but that is because the SCOBY definitely have air flow to keep healthy, but a low light condition.
I would say you are ok. You'd have to have a lab analysis to really know if it's a Vinegar 'plant' or a SCOBY.
