Brooks Groves

Magnum

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Dual purpose
Origin United States
Bred by Unrecorded
Two or more independent sources
Bitterness
Very high (9–18% alpha)
In the glass
43 beers here Β· Brooks has had 1
Usually paired with
Saaz, Citra, Mosaic
Swap it for
Hallertau Magnum Β· compare them β†’

Brewing values

range on filetypicalbreeder or labmerchant

Alpha acid

9–18% typical 13.5

2 sources, spread of 9%
  • Hopsteiner11–16Data sheet last changed 2020-01-09.
  • Crosby Hop Farm9–18

Beta acid

4–7% typical 5.8

2 sources, spread of 3%
  • Hopsteiner5–7Data sheet last changed 2020-01-09.
  • Crosby Hop Farm4–7

Cohumulone

21–29% of alpha typical 25

1 source, spread of 8% of alpha
  • Hopsteiner21–29Data sheet last changed 2020-01-09.

Total oil

1.5–3.9 mL/100g typical 2.5

2 sources, spread of 2.4 mL/100g
  • Hopsteiner1.9–2.8Data sheet last changed 2020-01-09.
  • Crosby Hop Farm1.5–3.9

Alpha to beta runs about 2.3:1, 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 28.2% 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:

  • Humulene27.4%
  • Farnesene0.5%
  • Linalool0.3%

Where it's grown

Not in the 2025 survey. Last reported in 2020.

Magnum: acres harvested by state, 2015–2025 Line chart of acres harvested in Washington, Oregon. The same figures are in the table below. 0 50 100 150 200 201520172019202120232025 Washington Oregon
Acres by year
YearWashingtonOregon
2015108199
2016withheld151
2017withheld47
2018β€”105
2019β€”withheld
2020β€”withheld
2021β€”β€”
2022β€”β€”
2023β€”β€”
2024β€”β€”
2025β€”β€”

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

In the glass Β· 43 beers from 8 breweries

Brooks has had one of them Β· 3.5 average

All 43 beers with Magnum β†’

Brewed alongside Β· in 33 beers that use Magnum with other hops

  1. Saaz 1133%
  2. Citra 824%
  3. Mosaic 721%
  4. Tettnanger 618%
  5. Hallertau Mittelfruh 515%
  6. Strata 412%
  7. Cascade 39%
  8. Mandarina Bavaria 39%

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

What to swap it for

  • aroma β€” Β· oils β€” Β· chemistry 99 partial data
  • HBC 630 28
    aroma β€” Β· oils β€” Β· chemistry 95 partial data
  • Loral 27
    aroma β€” Β· oils β€” Β· chemistry 90 partial data
  • Strata 27
    aroma β€” Β· oils β€” Β· chemistry 89 partial data
  • aroma β€” Β· oils β€” Β· chemistry 89 Β· shifts dual to aroma partial data
  • Sabro 27
    aroma β€” Β· oils β€” 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.