Oxygen is spread throughout the mixture by stirring it daily and by letting air reach the fluid through a cheesecloth filter, which is used in place of a regular lid.
Mother of vinegar is a mat that forms on the bottom of fermenting wine that has gone bad.
Glass, plastic, wood, enamel, or stainless steel containers should be used for making or storing vinegar. The same holds true for making or storing foods that have more than 1 Tablespoon of vinegar in the recipe. Change all of the fruit sugar to alcohol. Change all of the alcohol to acetic acid. Clarify the acetic acid to prevent further fermentation and decomposition.