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For the first time in 20 years of teaching science, I had white vinegar with a sort of slime in it. The internet says white vinegar has an indefinite shelf life. Has anyone else experienced this?
Paul Kiefer It is probably what is called "mother of vinegar". It is a fungus or something similar. Try goggling it. If I remember correctly, it is not harmful, it just looks bad.

P. Kiefer
Sep 11, 2015


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