Astra
Alpha acid
7–10%
Beta acid
4–6%
Total oil
1–3 mL
Australia
Zeus
Alpha acid
13–17.5%
Beta acid
4–6.5%
Total oil
2.4–4.5 mL
United States
Key differences
When to pick Astra
- Versatile - works for both bittering and aroma
- Richer, more complex aroma profile
When to pick Zeus
- Higher alpha acid - stronger bittering
- More essential oils - more intense aroma
- Bittering workhorse - efficient in the mash
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Astra
TropicalSweetPeachWhiteMelonGrassyGrapefruitHoney
Only in Zeus
Black currantLicoriceCurryPungent
Property
| Property | Astra | Zeus |
|---|---|---|
| Alpha acid | 7–10% | 13–17.5% |
| Beta acid | 4–6% | 4–6.5% |
| Co-humulone | 26–28% | 28–40% |
| Total oil | 1–3 mL | 2.4–4.5 mL |
| Myrcene | - | 45–60% |
| Humulene | 6–8% | 9–18% |
| Caryophyllene | 2–3% | 6–11% |
| Farnesene | - | 0–1% |
| Origin | Australia | United States |
| Purpose | Dual purpose | Bittering |