Onion Beer Flavour Standard
Importance of the Onion Beer Flavour Standard
Component of the sulphury character of pale lager beer. Onion is an off flavour at high concentrations.
Origins of flavour
The onion flavour note is produced from sulphur containing amino acids during wort boiling. Purged from beer during fermentation by yeast derived CO2. Also found in hop oil.
Remarks
Standard recommended by Peppard (J Inst Brew, 91, 364-369).
Associated terms
- Cooked onion
- Garlic like
Analysis
- Gas Chromatography
Typical concentration in beer
- 0.05 - 0.3 µg/l
Approximate flavour threshold
- 0.1 µg/l
Beer flavour wheel number
- 0736
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