On the vinegar, just a safety point.

I know most of you probably already know this, but for those of you who may not, don't drink "regular household vinegar" if by regular household you mean white distilled vinegar. That could be dangerous.

Apple cider vinegar is the most commonly used. You can also use rice wine vinegar. I don't know the acetic acid concentrations in those, I'll post them if I find out.