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 sale of vinegar over a certain percentage of acidity. As an example, the government of Canada limits the acetic acid of vinegars to between 4.1% and 12.3%, unless it is sold only for manufacturing use and identified as such. When baking soda and vinegar are combined, the bicarbonate ion of the baking soda reacts to form carbonic acid, which decomposes into carbon dioxide, water and sodium acetate completing the carbon cycle. See also Food additive List of condiments Vinegar tasters References External links Condiments Household chemicals Traditional medicine