I didn't realize there was mold on the top and bottom of my white wine vinegar until I had added a teaspoon into the ingredients for Tzatziki. Is it OK to use or should it be discarded?

1 Answer 1


It depends; if it's formed a solid disk and was/is floating on top, what you probably have is a vinegar mother, not mold. It's a bacterial colony of acetobacter, and probably happened because your vinegar still had a little bit of alcohol left in it for the bacteria to feed on.

You have several options if this is the case:

  • You can leave it in the bottle; it will do you no harm.
  • You can filter it out with a coffee filter or similar and discard it. Your vinegar will be fine.
  • You can put it in a bottle with (perhaps not so great) wine and/or the leftovers of bottles and make vinegar.
  • This seems most likely. The acidity of vinegar would make it pretty unlikely to get mold.
    – SourDoh
    Commented Oct 27, 2015 at 4:10

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