Glacier
Alpha acid
3.3–9.7%
Beta acid
5.4–10%
Total oil
0.5–1.5 mL
United States
Opal
Alpha acid
5–14%
Beta acid
3.5–5.5%
Total oil
0.8–1.3 mL
Germany
Key differences
When to pick Glacier
- Higher beta acid - smoother, longer-lasting bitterness
- More myrcene - pronounced citrus and resinous notes
When to pick Opal
- Higher alpha acid - stronger bittering
- Richer, more complex aroma profile
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Glacier
PlumBlackberryWoodyCedar
Only in Opal
Black currantCitrusSpicyFloralHerbalAnise
Property
| Property | Glacier | Opal |
|---|---|---|
| Alpha acid | 3.3–9.7% | 5–14% |
| Beta acid | 5.4–10% | 3.5–5.5% |
| Co-humulone | 11–16% | 13–34% |
| Total oil | 0.5–1.5 mL | 0.8–1.3 mL |
| Myrcene | 35–45% | 20–45% |
| Humulene | 25–35% | 30–50% |
| Caryophyllene | 8–13% | 8–15% |
| Farnesene | 0–1% | 0–1% |
| Origin | United States | Germany |
| Purpose | Dual purpose | Dual purpose |
Fuggle
Styrian Golding