Sour beer compounds tracked during brewing process
Chemists partner with a California brewery to elucidate the complex flavours in tart beers
Sour beers are made via a unique but opaque brewing process that has been used in Europe for centuries. Now, chemists in the US are using nuclear magnetic resonance (NMR) spectroscopy and liquid chromatography-mass spectrometry (LC–MS) to elucidate the chemistry underway during sour beer brewing.