Opal
Alpha acid
5–14%
Beta acid
3.5–5.5%
Total oil
0.8–1.3 mL
Germany
Eroica
Alpha acid
7.3–14.9%
Beta acid
3–5.3%
Total oil
0.8–1.3 mL
United States
Key differences
When to pick Opal
- Versatile - works for both bittering and aroma
- Richer, more complex aroma profile
When to pick Eroica
- Higher alpha acid - stronger bittering
- More myrcene - pronounced citrus and resinous notes
- Bittering workhorse - efficient in the mash
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Opal
Black currantCitrusSpicyFloralHerbalAnise
Only in Eroica
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Property
| Property | Opal | Eroica |
|---|---|---|
| Alpha acid | 5–14% | 7.3–14.9% |
| Beta acid | 3.5–5.5% | 3–5.3% |
| Co-humulone | 13–34% | 40% |
| Total oil | 0.8–1.3 mL | 0.8–1.3 mL |
| Myrcene | 20–45% | 55–65% |
| Humulene | 30–50% | 0–1% |
| Caryophyllene | 8–15% | 7–13% |
| Farnesene | 0–1% | 0–1% |
| Origin | Germany | United States |
| Purpose | Dual purpose | Bittering |