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:
“When over the houses, a golden illusion
Brings back an earlier season of quiet
And quieting dreams in the sleepers in darkness
The moon is the mother of pathos and pity.”
—Wallace Stevens (1879–1955)
“All know that all the dead in the world about that place are stuck
And that should mother seek her son she’d have but little luck
Because the fires of Purgatory have ate their shapes away;
I swear to God I questioned them and all they had to say
Was fol de rol de rolly O.”
—William Butler Yeats (1865–1939)
“An illustrious individual remarks that Mrs. [Elizabeth Cady] Stanton is the salt, Anna Dickinson the pepper, and Miss [Susan B.] Anthony the vinegar of the Female Suffrage movement. The very elements get the “white male” into a nice pickle.”
—Anonymous, U.S. women’s magazine contributor. The Revolution (August 19, 1869)