400 µg per capsule

Spicy, like clove oil or allspice”

Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of spicy character. Eugenol is a flavour impact character in some styles of ale. It is also an age-related off-flavour in pale lager beer.

Food grade | free from sensory impurities | extensively tested | safe to smell and taste.

Flavour cards

Flavour standard information

Technical specification

The best way to for tasters to detect spicy characters from eugenol in beer is as follows. Without covering the glass, swirl the beer to release the aroma. Take a single short sniff. Repeat as necessary.
Amount of flavour per capsule
400 µg per capsule
The flavour threshold of eugenol in beer is 130 µg / l.
Eugenol is formed during ageing of beer from precursors which are formed by yeast during fermentation. Formation of eugenol is associated with use of warm fermentation temperatures and typically associated with beers of higher alcoholic strength. Barrel-aged beers can also possess a spicy character from eugenol, deriving this flavour character from the wood.

Professional beer tasters can confuse spicy flavours from eugenol with the following:

  • Vanillin
  • 4-Vinyl guaiacol
  • Benzaldehyde
Eugenol is a flavour impact character in some beer styles, eg Belgian ales. It is an off-flavour in lager beers. It is more common in beers of higher alcohol content (> 7% vol / vol).
CAS registry number
The CAS reference number of eugenol is 97-53-0.
Other names
  • 4-allyl catechol-2-methyl ether
  • 4-allyl guaiacol
  • 4-allyl-1-hydroxy-2-methoxybenzene
  • 4-allyl-2-methoxyphenol
  • para-eugenol
  • p-eugenol
  • 1-hydroxy-2-methoxy-4-allyl benzene
  • 1-hydroxy-2-methoxy-4-prop-2-enyl benzene
  • 4-hydroxy-3-methoxy-1-allyl benzene
  • 2-methoxy-1-hydroxy-4-allyl benzene
  • 2-methoxy-4-(2-propen-1-yl) phenol
  • 2-methoxy-4-allyl phenol
  • 2-methoxy-4-prop-2-enyl phenol
  • 2-methoxy-4-prop-2-enylphenol
  • 2-methoxy-4,2-propen-1-yl phenol
Eugenol is often present together with other phenolic and spicy flavour compounds, generating complex aromatic notes in beer.
Threshold distribution
Capsules per pot
Legal notices
This product is protected by the following trade marks and patents:
  • US Patent no. D679900
  • European Community Trade Mark
    Registration no. 009937574
  • European Community Trade Mark
    Registration no. 009856527
  • US Trade Mark Registration no. 4345057
  • US Trade Mark Registration no. 4345056
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spicy beer flavour standard - eugenol
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