Miscellaneous
When a bottle of vinegar is opened, mother of vinegar may develop. It is considered harmless and can be removed by filtering.
Vinegar eels (Turbatrix aceti), a form of nematode, may occur in some forms of vinegar unless the vinegar is kept covered. These feed on the mother of vinegar and can occur in naturally fermenting vinegar.
Some countries prohibit the selling of vinegar over a certain percentage acidity. As an example, the government of Canada limits the acetic acid of vinegars to between 4.1% and 12.3%.
According to legend, in France during the Black Plague, four thieves were able to rob houses of plague victims without being infected themselves. When finally caught, the Judge offered to grant the men their freedom, on the condition that they revealed how they managed to stay healthy. They claimed that a medicine woman sold them a potion made of garlic soaked in soured red wine (vinegar). Variants of the recipe, called Four Thieves Vinegar, have been passed down for hundreds of years and are a staple of New Orleans hoodoo practices.
Water-Slide Decal Application as used on scale models, musical instruments, etc. One part white distilled vinegar (5% acidity) diluted with two parts of distilled/filtered water creates a suitable solution for the application of water-slide decals to hard surfaces. The solution is very similar to the commercial products, often described as "decal softener", sold by hobby shops. The slight acidity of the solution softens the decal and enhances its flexibility, permitting the decal to cling to contours more efficiently. When using this DIY solution, just follow the directions given for normal water application of the decal.
When baking soda and vinegar are combined, the bicarbonate ion of the baking soda is turned into carbonic acid, which decomposes into carbon dioxide and water.
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