Keyworth's Early

Brewing values

range on filetypicalbreeder or labmerchant

Alpha to beta runs about 2.1:1, 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 23% of total oil — 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:

• Humulene23%

What to swap it for

• Mistral 29
  aroma — · oils — · chemistry 96 partial data
• Emerald Spire 28
  aroma — · oils — · chemistry 95 · shifts aroma to dual partial data
• Opus 28
  aroma — · oils — · chemistry 95 partial data
• Bramling Cross 28
  aroma — · oils — · chemistry 95 · shifts aroma to dual partial data
• First Gold 28
  aroma — · oils — · chemistry 94 · shifts aroma to dual partial data
• Tsingdao Flower 28
  aroma — · oils — · chemistry 94 · shifts aroma to dual 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 — 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. Seedling OJ47 (1930) from open-pollinated seed of EE92, a granddaughter of wild Neomexicanus; selected 1943 for wilt resistance.

Notes on this record

Added 2026-09-29 from charles-faram's page. Charles Faram does not state a brewing role.