kettle hop extract

250 µg per capsule

Kettle hop, like late hopped lager”

Certified beer flavour standard used to train professional beer tasters to recognize and scale the intensity of kettle hop character. Kettle hop notes are imparted to beer through addition of hops or hop products to boiling wort. This flavour notes result from a complex mixture of flavour impact characters.

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 kettle hop flavour characteristics 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
250 µg per capsule
The flavour threshold of kettle hop extract in beer is 80 µg / l.
Kettle hop notes are contributed to beer by addition of hop materials in the brewhouse. The intensity and nature of the character depends on the hop products and brewing practices.

Professional beer tasters have been known to confuse kettle hop characters with the following flavours:

  • Geraniol
  • Hop oil extract
  • Isovaleric acid
Kettle hop notes are positive flavour characteristics in ‘hoppy’ lagers. Different hop varieties, in combination with different brewing practices, give rise to a range of hop flavour intensities and characteristics.
CAS registry number
The CAS registry number of kettle hop extract 8007-04-3.
Other names
  • hop extract
  • hop oil
  • kettle hop
Kettle hop extract is not a reference standard in the strictest sense, since the flavour is derived from a complex natural mixture of many compounds.
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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Kettle hop beer flavour standard
earn 7 points