“
Diacetyl, like butter, or butter popcorn”
Certified cider flavour standard used to train professional beer tasters to recognize and scale the intensity of diacetyl character. Butanedione is produced by yeast during fermentation. It imparts a buttery flavour to cider. High levels can be formed by malo-lactic bacteria.
Food grade | free from sensory impurities | extensively tested | safe to smell and taste.