Mother of vinegar - also called Mycoderma aceti (a New Latin expression, from the Greek μὑκης (fungus) plus δἐρμα (skin), and the Latin aceti (of the acid) - is a substance composed of a form of cellulose and acetic acid bacteria that develops on fermenting alcoholic liquids, which turns alcohol into acetic acid with the help of oxygen from the air. It is added to wine, cider, or other alcoholic liquids to produce vinegar.
Mother of vinegar can also form in store-bought vinegar if there is some non-fermented sugar and/or alcohol contained in the vinegar. This is more common in unpasteurized vinegar. While not appetizing in appearance, mother of vinegar is completely harmless and the surrounding vinegar does not have to be discarded because of it. It can be filtered out using a coffee filter, used to start a bottle of vinegar, or simply left in and ignored.
Famous quotes containing the words mother of, mother and/or vinegar:
“There shall be no slave in your home, male or female: Least of all the mother of your son.”
—Franz Grillparzer (1791–1872)
“How the mother is to be pitied who hath handsome daughters! Locks, bolts, bars, and lectures of morality are nothing to them: they break through them all. They have as much pleasure in cheating a father and mother, as in cheating at cards.”
—John Gay (1685–1732)
“My grandfather fell on Vinegar Hill,
And fighting was not his trade;
But his rusty pike’s in the cabin still,
With Hessian blood on the blade.””
—Joseph I. C. Clarke (1846–1925)