Hydra
Alpha acid
10.5–13.7%
Beta acid
6.4–7.9%
Total oil
-
United States
Stirling
Alpha acid
6–12%
Beta acid
4–6%
Total oil
1.3–1.9 mL
United States
Key differences
When to pick Hydra
- Higher alpha acid - stronger bittering
- Higher beta acid - smoother, longer-lasting bitterness
- More myrcene - pronounced citrus and resinous notes
- Richer, more complex aroma profile
When to pick Stirling
No clear differences - both varieties have a similar profile. Choose based on availability or country of origin.
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Hydra
CitrusTangerineMandarinZestResinLimeBerryPeachWatermelonRoseApricotTropical
Only in Stirling
HerbalCitusSpicyFloral
Property
| Property | Hydra | Stirling |
|---|---|---|
| Alpha acid | 10.5–13.7% | 6–12% |
| Beta acid | 6.4–7.9% | 4–6% |
| Co-humulone | 27–28% | 21–28% |
| Total oil | - | 1.3–1.9 mL |
| Myrcene | 54–55% | 44–48% |
| Humulene | 11–12% | 19–23% |
| Caryophyllene | 8–9% | 5–7% |
| Farnesene | 0–1% | 11–17% |
| Origin | United States | United States |
| Purpose | Dual purpose | Dual purpose |