Stirling
Alpha acid
6–12%
Beta acid
4–6%
Total oil
1.3–1.9 mL
United States
Summer
Alpha acid
5.6–6.4%
Beta acid
4.8–6.1%
Total oil
1.4–2 mL
Australia
Key differences
When to pick Stirling
- Higher alpha acid - stronger bittering
- More myrcene - pronounced citrus and resinous notes
- Versatile - works for both bittering and aroma
When to pick Summer
- Aroma-focused - ideal for dry hopping
- Richer, more complex aroma profile
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Stirling
HerbalCitusSpicyFloral
Only in Summer
ApricotMelonGrassyCitrusStone fruitPassion fruitPeach
Property
| Property | Stirling | Summer |
|---|---|---|
| Alpha acid | 6–12% | 5.6–6.4% |
| Beta acid | 4–6% | 4.8–6.1% |
| Co-humulone | 21–28% | 20–25% |
| Total oil | 1.3–1.9 mL | 1.4–2 mL |
| Myrcene | 44–48% | 29–38% |
| Humulene | 19–23% | 28–50% |
| Caryophyllene | 5–7% | 8–11% |
| Farnesene | 11–17% | 0–1% |
| Origin | United States | Australia |
| Purpose | Dual purpose | Aroma |