The term refers to the living microorganisms, primarily bacteria and yeast, that facilitate the fermentation process in the creation of a specific type of vinegar. This biological culture, often visible as a cloudy sediment, transforms sugars from a source fruit into acetic acid, the defining characteristic of the final product. This culture is crucial for converting alcohol to acetic acid, a key step in vinegar production.
Its significance lies in its ability to naturally produce a vinegar known for its potential health-related properties. Historically, this method of vinegar production has been valued for creating a product rich in probiotics and enzymes, believed to offer various wellness advantages. These advantages stem from the active cultures and resulting compounds formed during fermentation.