Stirling
Alpha acid
6–12%
Beta acid
4–6%
Total oil
1.3–1.9 mL
United States
Riwaka
Alpha acid
4.5–6.5%
Beta acid
4–5%
Total oil
0.8–1.5 mL
New Zealand
Key differences
When to pick Stirling
- Higher alpha acid - stronger bittering
- More essential oils - more intense aroma
- Versatile - works for both bittering and aroma
When to pick Riwaka
- More myrcene - pronounced citrus and resinous notes
- Aroma-focused - ideal for dry hopping
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Stirling
HerbalCitusSpicyFloral
Only in Riwaka
TropicalPassion fruitGrapefruitCitrus
Property
| Property | Stirling | Riwaka |
|---|---|---|
| Alpha acid | 6–12% | 4.5–6.5% |
| Beta acid | 4–6% | 4–5% |
| Co-humulone | 21–28% | 29–38% |
| Total oil | 1.3–1.9 mL | 0.8–1.5 mL |
| Myrcene | 44–48% | 67–70% |
| Humulene | 19–23% | 8–10% |
| Caryophyllene | 5–7% | 2–6% |
| Farnesene | 11–17% | 0–1% |
| Origin | United States | New Zealand |
| Purpose | Dual purpose | Aroma |