Styrian Eureka

Floral, citrus and mild herbal notes with smooth bitterness, per Charles Faram. Not the American Eureka.

Dual purpose

Origin Slovenia

Bred by Unrecorded

One source

Smells like: Floral, Citrus, Herbal
Bitterness: Very high (11–17% alpha)
Swap it for: Pekko · compare them →

Brewing values

range on filetypicalbreeder or labmerchant

Alpha acid

11–17% typical 14

11 17

1 source, spread of 6%

Charles Faram11–17

Beta acid

3–5.5% typical 4.3

3 5.5

1 source, spread of 2.5%

Charles Faram3–5.5

Cohumulone

21–25% of alpha typical 23

21 25

1 source, spread of 4% of alpha

Charles Faram21–25

Alpha to beta runs about 3.3:1, which is what governs how fast the bitterness fades in storage.

Oil composition

Myrcene73.3%
Humulene26.7%

Normalised to 100% so this hop can be compared like for like. The published components sum to 75% of total oil in the source data.

Aroma

Floral
Citrus
Herbal

What to swap it for

Pekko 93

aroma 100 · oils 89 · chemistry 86
Mistral 77

aroma 90 · oils 76 · chemistry 62 · shifts dual to aroma
Loral 74

aroma 72 · oils 63 · chemistry 89
Styrian Dragon 67

aroma 60 · oils 85 · chemistry 57 · shifts dual to aroma
Mosaic 67

aroma 55 · oils 59 · chemistry 90
Pulawski 66

aroma 60 · oils 62 · chemistry 77 · shifts dual to aroma

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.

Notes on this record

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

For brewers and data folks: this hop as JSON · the source file