Ingredient

Vinegar mother

Acetobacter aceti

Also known as: acetobacter, Mother of vinegar, MOV

Live culture of *Acetobacter* bacteria that converts ethanol to acetic acid in the presence of oxygen — the right ingredient for any home-vinegar production: apple-cider vinegar from cider, wine vinegar from wine, beer vinegar from beer, fruit-scrap vinegar from fermented fruit waste. Forms a gelatinous floating mat (the visible 'mother') of cellulose and bacteria. Slow process — 2–6 months from start to finished vinegar at 5%+ acidity. Once established, the mother culture continues indefinitely, producing vinegar from any added alcohol substrate.

Inputs / outputs

Substrate: any alcoholic beverage at 5–8% ABV (wine, hard cider, beer, mead, fortified fruit ferment)
Inoculation: unpasteurized vinegar (Bragg’s, raw apple cider vinegar) at 10% by volume, or a transferred mother
Conditions: 70–85°F, oxygen access (cloth-covered jar; not airtight), dark
Time: 2–6 months (longer = stronger; up to 6%+ acidity)
Output: vinegar at 4–7% acetic acid, plus a cellulose-mat mother to start the next batch

Solves / unlocks

Home apple-cider, wine, beer, mead vinegar from any alcohol substrate
Fruit-scrap vinegar (fermented fruit peels and cores → cider → vinegar; closes a kitchen waste loop)
Acidifier for [[water-bath-canning|water-bath canning]]
Pickling brine (5% vinegar minimum for safe canned pickles)
Salad dressing, marinades, drinking vinegar (shrubs)
Cleaning agent (5% vinegar = household cleaner)

Constraints

Oxygen required — acetobacter is aerobic, opposite of most fermentation. Cover with cloth, not lid.
Slow — 2–6 months is the work; not a fast-turnaround preservation.
Acidity testing matters for canning — for pickling and [[water-bath-canning|water-bath canning]], the vinegar must be ≥5% acidity; home vinegar of unknown strength is risky for canning. Use commercial 5% vinegar for canning, home vinegar for direct culinary use.
Vinegar fruit fly — acetobacter byproducts attract fruit flies; tight cloth cover is essential.
Mother dies in cold or extended low-substrate — feed regularly with new alcohol; don’t refrigerate.

Source

Live mother starter: GEM Cultures, Cultures for Health, raw Bragg’s apple cider vinegar (with [[sourdough-starter|the mother]] visible)
[[the-art-of-fermentation|The Art of Fermentation]] ([[sandor-katz|Sandor Katz]]) — vinegar chapter
True Brews (Emma Christensen) — modern home vinegar walkthrough

What links here, and how

Inbound connections from across the wiki, grouped by lens and by relationship. These appear automatically — every entity page declares what it links to, and that data populates here on the targets.

Scientific

parallels

The microbe as collaborator Acetobacter — the partner that converts our overage of alcohol into stable vinegar

Practical

contains

Preservation toolkit microbial / Acetobacter alcohol-to-acid converter

2 inbound links · 4 outbound