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Flavored lubes have gone too far
You're joking, but if they actually made a flavored lube like this I bet it'd sell.
Ketchup contains vinegar. Probably don't want that down there...
Yeah, it'd obviously need to be made of other ingredients. The sugar content would also likely cause some issues.
I was gonna say, I'm not sure there's non-acidic ingredients that have the same acidic/sour taste.
But there are these bubblegums that are extremely sour, so I guess, we do have a way of triggering those taste receptors without melting away your jaw. 🫠
Everything sour is acidic, the sour taste comes from the hydrogen ions (protons) donated by acids blocking the potassium ions leaving your taste buds, this creates a depolarization and opens voltage gated calcium channels, the influx of which causes neurotransmitter release. Sour gums/candies don't contain Acetic acid (vinegar) but instead Citric acid and sometimes Malic acid.