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• n  an unpleasant smelling fatty acid found especially in butter

• butanoic acid

News & Articles

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• Avery Brewing's got good taste — and the science to back it up
  The first beer sample tastes like SpaghettiOs. Which is bad — but not as horrid as the one that smells like sweaty socks. Or the one that has not-so-subtle notes of baby vomit — an aroma that comes from butyric acid, which can form if bacteria infect the beer during a brew. Th...
  Oct. 9, 2013 - Denver Westword