3.5 mg per capsule

Freshly cut grass, like hedge cuttings”

Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of freshly cut grass character. cis-3-hexenol is a positive character found in some ales and lagers. It imparts a fresh 'green' note to 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 evaluate freshly cut grass flavour 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
3.5 mg per capsule
The flavour threshold of 3-hexenol in beer is 1.1 mg / l.
Several compounds, closely related to cis-3-hexanol also impart grassy notes to beer. Although they are mostly hop-derived they can also arise through use of immature malts, such as chit malt.

3-Hexenol is sometimes confused by professional beer tasters with the following flavours:

  • Acetaldehyde
  • Kettle hop extract
  • Isobutyraldehyde
cis-3-Hexenol is a positive flavour character in some ales and lagers, imparting a fresh ‘green’ flavour note. It is considered an off-flavour when present in excess.
CAS registry number
The CAS registry number of cis-3-hexenol is 928-96-1.
Other names
  • (Z)-hex-3-en-1-ol
  • cis-hex-3-en-1-ol
  • (Z)-3-hexen-1-ol
  • beta,gamma-hexen-1-ol
  • cis-3-hexen-1-ol
  • (Z)-3-hexenol
  • cis-3-hexenol
  • beta-gamma-hexenol
  • leaf alcohol
cis-3-Hexenol is one of several compounds that impart an odour of freshly cut grass to beer. Its corresponding aldehyde cis-3-hexenal also contributes to this flavour.
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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Freshly cut grass beer flavour standard - hexenol
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