, like cardboard or oxidized beer”
Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of papery character. trans-2-Nonenal is an off-flavour associated with beer ageing. It is one of several compounds formed as a result of oxidation reactions which occur in the malting and brewing processes.
Food grade | free from sensory impurities | extensively tested | safe to smell and taste.