Brooks Groves

Eureka!

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Dual purpose
Origin United States
Bred by Unrecorded
One source
Bitterness
Very high (17–19.9% alpha)
In the glass
3 beers here
Swap it for
Akoya Β· compare them β†’

Brewing values

range on filetypicalbreeder or labmerchant

Alpha acid

17–19.9% typical 18.4

1 source, spread of 2.9%
  • Hopsteiner17–19.9Data sheet last changed 2020-01-09.

Beta acid

4.6–6% typical 5.3

1 source, spread of 1.4%
  • Hopsteiner4.6–6Data sheet last changed 2020-01-09.

Cohumulone

28–30% of alpha typical 29

1 source, spread of 2% of alpha
  • Hopsteiner28–30Data sheet last changed 2020-01-09.

Total oil

2.5–4.4 mL/100g typical 3.5

1 source, spread of 1.9 mL/100g
  • Hopsteiner2.5–4.4Data sheet last changed 2020-01-09.

Alpha to beta runs about 3.5:1, which is what governs how fast the bitterness fades in storage.

Oil composition

Not enough of this hop's oil is accounted for to show a breakdown. The sources on file name components totalling 0.8% of total oil β€” most of the balance is myrcene, which the source for this record doesn't publish. Rather than scale what's here up to 100% and invent the rest, here is only what was actually measured:

  • Linalool0.8%

Where it's grown

In 2025: 401 acres in Washington, withheld in Idaho (NASS withholds a figure when it would identify a single farm). That's at least 401 acres.

Eureka!: acres harvested by state, 2015–2025 Line chart of acres harvested in Washington, Idaho. The same figures are in the table below. 0 200 400 600 800 201520172019202120232025 Washington Idaho

2015–2025: NASS reports it as β€œEureka”.

Acres by year
YearWashingtonIdaho
2015withheldβ€”
2016withheldwithheld
2017362withheld
2018409133
2019425185
2020465withheld
2021466332
2022570419
2023621525
2024479374
2025401withheld

Acres harvested, from the USDA NASS National Hop Report. Where America's hops grow β†’

In the glass Β· 3 beers from 2 breweries

What to swap it for

  • Akoya 29
    aroma β€” Β· oils β€” Β· chemistry 98 partial data
  • aroma β€” Β· oils β€” Β· chemistry 93 partial data
  • Altus 27
    aroma β€” Β· oils β€” Β· chemistry 90 partial data
  • Polaris 27
    aroma β€” Β· oils β€” Β· chemistry 89 partial data
  • Enigma 26
    aroma β€” Β· oils β€” Β· chemistry 87 partial data
  • Zeus 26
    aroma β€” Β· oils β€” Β· chemistry 87 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.