Brooks Groves

Riwaka

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Dual purpose
Origin New Zealand
Bred by Unrecorded
Two or more independent sources
Bitterness
Moderate (4.5–6.5% alpha)
In the glass
39 beers here
Usually paired with
Nelson Sauvin, Mosaic, Nectaron
Swap it for
Mistral Β· compare them β†’

Brewing values

range on filetypicalbreeder or labmerchant

Alpha acid

4.5–6.5% typical 5.5

3 sources, spread of 2%
  • Hopsteiner4.5–6.5Data sheet last changed 2021-07-07.
  • New Zealand Hops Ltd4.5–6.5
  • Crosby Hop Farm4.5–6.5

Beta acid

4–5% typical 4.5

3 sources, spread of 1%
  • Hopsteiner4–5Data sheet last changed 2021-07-07.
  • New Zealand Hops Ltd4–5
  • Crosby Hop Farm4–5

Cohumulone

30–34% of alpha typical 32

1 source, spread of 4% of alpha
  • Hopsteiner30–34Data sheet last changed 2021-07-07.

Total oil

0.9–1.5 mL/100g typical 1.2

3 sources, spread of 0.6 mL/100g
  • Hopsteiner1–1.5Data sheet last changed 2021-07-07.
  • New Zealand Hops Ltd0.9–1.5
  • Crosby Hop Farm0.9–1.5

Alpha to beta runs about 1.2:1, which is what governs how fast the bitterness fades in storage.

Oil composition

  • Myrcene75.6%
  • Humulene13.1%
  • Caryophyllene6.9%
  • Geraniol2.5%
  • Farnesene0.9%
  • Linalool0.9%

Normalised to 100% so this hop can be compared like for like. The published components sum to 79.4% of total oil in the source data.

In the glass Β· 39 beers from 13 breweries

All 39 beers with Riwaka β†’

Brewed alongside Β· in 35 beers that use Riwaka with other hops

  1. Nelson Sauvin 1851%
  2. Mosaic 1234%
  3. Nectaron 1131%
  4. Citra 1131%
  5. Simcoe 823%
  6. Krush 411%
  7. Motueka 411%
  8. Columbus 39%

Counted from the hop lists of every beer in What's in the can: what Pacific Northwest brewers actually put next to Riwaka.

What to swap it for

  • Mistral 50
    aroma β€” Β· oils 79 Β· chemistry 88 Β· shifts dual to aroma partial data
  • aroma β€” Β· oils 89 Β· chemistry 77 Β· shifts dual to aroma partial data
  • Triskel 50
    aroma β€” Β· oils 89 Β· chemistry 77 partial data
  • Belma 49
    aroma β€” Β· oils 88 Β· chemistry 76 Β· shifts dual to aroma partial data
  • Taiheke 49
    aroma β€” Β· oils 75 Β· chemistry 88 partial data
  • Ahtanum 48
    aroma β€” Β· oils 70 Β· chemistry 89 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.