Hop: Opal
Description
Opal was bred by Hüll Hop Research Institute in 2001, released commercially in 2004. The hop has not been well received the commercial breweries.
General Information
| Profile | Sweet, spice (pepper, aniseed), herbal (grass) and light orange. |
| Country | Germany |
| Substitutes | East Kent Golding, Smaragd, Styrian Golding |
| Purpose | Dual: Aroma and Bittering |
| Yield | 1420 - 1470 lbs/acre |
| Storage | Retains 60%-70% alpha acid contents after 6 months of storage at 68°F. |
| Beer Styles | Pilsner, Lager, Blonde Ale |
| Resistant | Verticillium wilt, downy mildew, powdery mildew |
| Tolerant | Aphid |
Acids
| Alpha Acid | 5.0 - 8.0% |
| Beta Acid | 3.5 - 5.5% |
| Cohumulone | 15.0 - 17.0% |
Oils
| Total Oil | 0.8 - 1.3 ml/100g |
| Myrcene | 30.0 - 45.0% |
| Humulene | 20.0 - 25.0% |
| Caryophyllene | 9.0 - 10.0% |
| Farnesene | < 1.0% |
| Linalool | 0.19 - 0.20% |
Additional Characteristics
| Growth Rate | Moderate |
| Maturity | Medium early |
| Ease of Harvest | Difficult |
Opal Aroma/Flavor Profile
Tags
Last Updated
- 2020-11-24 08:26:25 (Added: 2020-11-24 08:26:25)
Source(s)
Did you know?
- Dwarf variety hops grow shorter in height than traditional varieties but, importantly, produce the same yield. This combination makes harvest easier.
Explanations
- Storage: is based on the percentage of alpha acids remaining after 6 months at 20*F.
- Oil composition percetages are based on the total percentage of oil in the hop. Example: 10 - 20% means that for the specific oil it is 10 - 20% of the overall oil make up.
Useful Links
- Hop Replacement Calculator - might be a bit outdated but useful for hops pre-2015.