Opal
Alpha acid
5–14%
Beta acid
3.5–5.5%
Total oil
0.8–1.3 mL
Germany
Progress
Alpha acid
5–7.5%
Beta acid
1.8–2.7%
Total oil
0.5–0.8 mL
United Kingdom
Key differences
When to pick Opal
- Higher alpha acid - stronger bittering
- More essential oils - more intense aroma
- Higher beta acid - smoother, longer-lasting bitterness
- More myrcene - pronounced citrus and resinous notes
- Versatile - works for both bittering and aroma
When to pick Progress
- Aroma-focused - ideal for dry hopping
Aroma profile and use
Shared aromas
Black currantFloral
Only in Opal
CitrusSpicyHerbalAnise
Only in Progress
GrassyMintSweetHoneyFruity
Property
| Property | Opal | Progress |
|---|---|---|
| Alpha acid | 5–14% | 5–7.5% |
| Beta acid | 3.5–5.5% | 1.8–2.7% |
| Co-humulone | 13–34% | 25–27% |
| Total oil | 0.8–1.3 mL | 0.5–0.8 mL |
| Myrcene | 20–45% | 25–30% |
| Humulene | 30–50% | 40–47% |
| Caryophyllene | 8–15% | 12–15% |
| Farnesene | 0–1% | 0–1% |
| Origin | Germany | United Kingdom |
| Purpose | Dual purpose | Aroma |
Golding
Styrian Golding