Opal
Alpha acid
5–14%
Beta acid
3.5–5.5%
Total oil
0.8–1.3 mL
Germany
Bobek
Alpha acid
3.5–9.3%
Beta acid
4–6.6%
Total oil
0.7–4 mL
Slovenia
Key differences
When to pick Opal
- Higher alpha acid - stronger bittering
- Versatile - works for both bittering and aroma
- Richer, more complex aroma profile
When to pick Bobek
- More essential oils - more intense aroma
- More myrcene - pronounced citrus and resinous notes
- Bittering workhorse - efficient in the mash
Aroma profile and use
Shared aromas
Floral
Only in Opal
Black currantCitrusSpicyHerbalAnise
Only in Bobek
Pine
Property
| Property | Opal | Bobek |
|---|---|---|
| Alpha acid | 5–14% | 3.5–9.3% |
| Beta acid | 3.5–5.5% | 4–6.6% |
| Co-humulone | 13–34% | 26–31% |
| Total oil | 0.8–1.3 mL | 0.7–4 mL |
| Myrcene | 20–45% | 30–45% |
| Humulene | 30–50% | 13–19% |
| Caryophyllene | 8–15% | 4–6% |
| Farnesene | 0–1% | 4–7% |
| Origin | Germany | Slovenia |
| Purpose | Dual purpose | Bittering |
Fuggle
Willamette