Brooks Groves

Dr. Rudi

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Dual purpose
Origin New Zealand
Bred by Unrecorded
One source
Bitterness
High (10–14% alpha)
Swap it for
Southern Cross Β· compare them β†’

Brewing values

range on filetypicalbreeder or labmerchant

Alpha acid

10–14% typical 12

1 source, spread of 4%
  • New Zealand Hops Ltd10–14

Beta acid

5–7% typical 6

1 source, spread of 2%
  • New Zealand Hops Ltd5–7

Total oil

1.3–2 mL/100g typical 1.6

1 source, spread of 0.8 mL/100g
  • New Zealand Hops Ltd1.3–2

Alpha to beta runs about 2:1, which is what governs how fast the bitterness fades in storage.

Oil composition

  • Myrcene53.9%
  • Humulene26.1%
  • Caryophyllene10.9%
  • Linalool7.4%
  • Geraniol1.1%
  • Farnesene0.6%

Normalised to 100% so this hop can be compared like for like. The published components sum to 91.8% of total oil in the source data.

What to swap it for

  • aroma β€” Β· oils 79 Β· chemistry 96 partial data
  • Nugget 51
    aroma β€” Β· oils 83 Β· chemistry 89 partial data
  • Vista 51
    aroma β€” Β· oils 85 Β· chemistry 85 partial data
  • aroma β€” Β· oils 76 Β· chemistry 92 Β· shifts dual to aroma partial data
  • Loral 50
    aroma β€” Β· oils 84 Β· chemistry 83 partial data
  • Summit 50
    aroma β€” Β· oils 84 Β· chemistry 82 partial data

Scored on aroma overlap, oil composition and acid chemistry, then nudged up where a brewer has vouched for the swap by hand. An axis we haven't measured earns nothing, so a hop known only by its acid numbers caps out around 30 β€” the score is how much evidence there is for the swap, not just how close the numbers happen to be. Anything under 50 is a different beer, not a substitution.

Pedigree

Parentage unrecorded.

Notes on this record

purpose defaulted to dual, unconfirmed -- was not researched individually for this bulk scaffold pass. Correct before publishing.

HopLove is an open dataset first and a website second. Every figure on this site is rolled up from cited observations in data/hops/, and the same build that made this page wrote ../../api/v1/hops.json β€” free, no key, no rate limit.

Built 2026-09-30T05:41:31.791Z from 232 cultivar records. Data under CC BY 4.0, code under MIT. Source and corrections on GitHub. Not affiliated with any hop breeder, farm or merchant; variety names are the marks of their owners.