“Diacetyl, like butter, or butter popcorn”
Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of diacetyl character. 2,3-Butanedione is an off-flavour formed in beer either from the activities of brewer's yeast or by contaminant lactic acid bacteria.
Food grade | free from sensory impurities | extensively tested | safe to smell and taste.