That's a good point, but it's probably the organic acids rather than the salt (which the media report you've linked to blames). Bacteria which produce lactic ac

That's a good point, but it's probably the organic acids rather than the salt (which the media report you've linked to blames). Bacteria which produce lactic acid are primarily used for traditional fermentation, I think, whereas distilled vinegar is made from ethanol by bacteria that produce acetic acid... Hmm: "Compared to acetic acid, [lactic acid's] pKa is 1 unit less, meaning lactic acid deprotonates ten times more easily than acetic acid does. This higher acidity is the consequence of the intramolecular hydrogen bonding between the α-hydroxyl and the carboxylate group." - https://en.wikipedia.org/wiki/Lactic_acid https://en.wikipedia.org/wiki/Lactic_acid (emphasis added)