People do a lot of canning around here also, but I’ve never before been unable to buy large jugs of both white and cider vinegar at any time of year or time of day.
(When I make pickles, I use cider vinegar. The white is for cleaning purposes. I know some people do use the white for pickles.)
Especially if you look at TB and automatically think 'tuberculosis". I really wouldn’t think there’d be much demand for the stuff.