Astra
Alpha acid
7–10%
Beta acid
4–6%
Total oil
1–3 mL
Australia
Sterling
Alpha acid
5.5–8.5%
Beta acid
4–6%
Total oil
1–2 mL
United States
Key differences
When to pick Astra
- Higher alpha acid - stronger bittering
- More essential oils - more intense aroma
- Versatile - works for both bittering and aroma
- Richer, more complex aroma profile
When to pick Sterling
- Aroma-focused - ideal for dry hopping
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Astra
TropicalSweetPeachWhiteMelonGrassyGrapefruitHoney
Only in Sterling
NobleHerbalSpicyFloral
Property
| Property | Astra | Sterling |
|---|---|---|
| Alpha acid | 7–10% | 5.5–8.5% |
| Beta acid | 4–6% | 4–6% |
| Co-humulone | 26–28% | 22–28% |
| Total oil | 1–3 mL | 1–2 mL |
| Myrcene | - | 35–45% |
| Humulene | 6–8% | 16–18% |
| Caryophyllene | 2–3% | 5–8% |
| Farnesene | - | 15–19% |
| Origin | Australia | United States |
| Purpose | Dual purpose | Aroma |