“Acetaldehyde, like green apple, emulsion paint or white wine”
Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of acetaldehyde character.
Acetaldehyde is produced by yeast during fermentation. A positive note at low levels but an off-flavour at higher levels. It is indicative of fermentation problems or poor control of dissolved oxygen in packaging.
Food grade | Free from sensory impurities | Extensively tested | Safe to smell and taste.