The term "vinegar" originates from the French "vin" (wine) and "aigre" (sour). Vinegar probably was discovered about 10 000 years ago, when a barrel of wine developed a crack. The wine was exposed to the air, went stale' (fermented), and turned to vinegar.  The fact is if you leave out a bottle of unfinished wine, in a slightly warm room, unstoppered, it will in about a week, turn to vinegar, when acetic acid is produced through the action of aerobic bacteria on the alcohol in the wine, in th...


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