Changes

'''Isovaleric Acid''', also known as 3-Methylbutanoic acid, is an organic compound with the formula (CH3)2CHCH2CO2H. The flavor and aroma are often described as rancid Parmesan, or foot odor. It is not to be confused with [[Butyric Acid]], which specifically has a more bile or vomit aroma and flavor. The flavor threshold of isovaleric acid is 1 mg/L <ref>[http://www.aroxa.com/beer/beer-flavour-standard/isovaleric-acid/ Aroxa. Isovaleric acid. Retreived 12/30/2015.] </ref>.