Aurum
Alpha acid
3.5–5.7%
Beta acid
3.1%
Total oil
0.5–1.7 mL
Germany
Opal
Alpha acid
5–14%
Beta acid
3.5–5.5%
Total oil
0.8–1.3 mL
Germany
Key differences
When to pick Aurum
- Aroma-focused - ideal for dry hopping
- Richer, more complex aroma profile
When to pick Opal
- Higher alpha acid - stronger bittering
- Higher beta acid - smoother, longer-lasting bitterness
- Versatile - works for both bittering and aroma
Aroma profile and use
Shared aromas
SpicyFloralHerbalCitrus
Only in Aurum
FruityMildEarthyNoble
Only in Opal
Black currantAnise
Property
| Property | Aurum | Opal |
|---|---|---|
| Alpha acid | 3.5–5.7% | 5–14% |
| Beta acid | 3.1% | 3.5–5.5% |
| Co-humulone | 20–23% | 13–34% |
| Total oil | 0.5–1.7 mL | 0.8–1.3 mL |
| Myrcene | - | 20–45% |
| Humulene | - | 30–50% |
| Caryophyllene | - | 8–15% |
| Farnesene | - | 0–1% |
| Origin | Germany | Germany |
| Purpose | Aroma | Dual purpose |
Styrian Golding