Plants, meat, dairy and mushrooms are not the only “food” sources anymore. Most vinegar is made from petroleum, lots of stuff has titanium dioxide as a coloring agent, salt is straight-up mined, and yeast defies classification as meat or plant. That’s just a drop in the “crap you’re probably eating but don’t necessarily understand” bucket.
@werehatrack I had not heard about petroleum vinegar before, but a quick search confirms it. Blech.
And here I thought the biggest vinegar scandal of the decade was when we picked up what we thought was apple cider vinegar, then noticed that it was apple flavored distilled vinegar. That was a shocker, and reminded us that even basic foodstuffs are not immune to added ingredients.