Brooks Groves

Ernest

Clear "New World" character from a 1920s Wye College seedling: complex and fruity, especially apricot, citrus and spice, per Charles Faram and Hop Alliance.

Dual purpose
Origin United Kingdom
Bred by Wye College
Two or more independent sources
Smells like
Apricot, Citrus, Spice
Bitterness
Moderate (5–7% alpha)
Swap it for
Mistral Β· compare them β†’

Brewing values

range on filetypicalbreeder or labmerchant

Alpha acid

5–7% typical 6.0

2 sources, spread of 2%
  • Charles Faram5–7
  • Hop Alliance6.1–6.1

Beta acid

4–5.5% typical 4.8

2 sources, spread of 1.5%
  • Charles Faram4–5.5
  • Hop Alliance4.5–5

Cohumulone

47–55% of alpha typical 50.5

2 sources, and they disagree, spread of 8% of alpha
  • Charles Faram50–55
  • Hop Alliance47–50

Total oil

0.7–1.1 mL/100g typical 0.9

1 source, spread of 0.4 mL/100g
  • Hop Alliance0.7–1.1

Alpha to beta runs about 1.3:1, which is what governs how fast the bitterness fades in storage.

Oil composition

  • Myrcene83.3%
  • Humulene16.7%

Normalised to 100% so this hop can be compared like for like. The published components sum to 60% of total oil in the source data.

Aroma

  • Apricot
  • Citrus
  • Spice

What to swap it for

  • Mistral 55
    aroma 20 Β· oils 92 Β· chemistry 65 Β· shifts dual to aroma
  • Cascade 51
    aroma 37 Β· oils 49 Β· chemistry 73
  • Sybilla 51
    aroma 20 Β· oils 61 Β· chemistry 81
  • aroma 8 Β· oils 79 Β· chemistry 76 Β· shifts dual to aroma
  • Belma 50
    aroma 18 Β· oils 78 Β· chemistry 63 Β· shifts dual to aroma
  • aroma 10 Β· oils 86 Β· chemistry 66

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. Selected at Wye College in 1923 by Prof. Ernest Salmon as seedling OZ97a.

Notes on this record

Added 2026-09-29 from charles-faram's page.

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.