Astra
Alpha acid
7–10%
Beta acid
4–6%
Total oil
1–3 mL
Australia
Liberty
Alpha acid
3–6.5%
Beta acid
3–4%
Total oil
0.6–1.8 mL
United States
Key differences
When to pick Astra
- Higher alpha acid - stronger bittering
- More essential oils - more intense aroma
- Higher beta acid - smoother, longer-lasting bitterness
- Versatile - works for both bittering and aroma
When to pick Liberty
- Bittering workhorse - efficient in the mash
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Astra
TropicalSweetPeachWhiteMelonGrassyGrapefruitHoney
Only in Liberty
NobleFloralHerbalSpicyDelicateCitrusLemon
Property
| Property | Astra | Liberty |
|---|---|---|
| Alpha acid | 7–10% | 3–6.5% |
| Beta acid | 4–6% | 3–4% |
| Co-humulone | 26–28% | 22–30% |
| Total oil | 1–3 mL | 0.6–1.8 mL |
| Myrcene | - | 15–25% |
| Humulene | 6–8% | 35–45% |
| Caryophyllene | 2–3% | 10–15% |
| Farnesene | - | 0–1% |
| Origin | Australia | United States |
| Purpose | Dual purpose | Bittering |