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