Topaz
Alpha acid
13.7–20.1%
Beta acid
4.9–7.9%
Total oil
1.3–2.2 mL
Australia
Ahtanum
Alpha acid
3.5–6.5%
Beta acid
4–6.5%
Total oil
0.5–1.7 mL
United States
Key differences
When to pick Topaz
- 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 Ahtanum
- More myrcene - pronounced citrus and resinous notes
- Aroma-focused - ideal for dry hopping
Aroma profile and use
Shared aromas
Pine
Only in Topaz
LycheeCloveResinGrassyTropicalPassion fruit
Only in Ahtanum
CitrusGrapefruitGeraniumEarthyFloralCedarLemon
Property
| Property | Topaz | Ahtanum |
|---|---|---|
| Alpha acid | 13.7–20.1% | 3.5–6.5% |
| Beta acid | 4.9–7.9% | 4–6.5% |
| Co-humulone | 47–53% | 30–35% |
| Total oil | 1.3–2.2 mL | 0.5–1.7 mL |
| Myrcene | 18–56% | 45–55% |
| Humulene | 8–16% | 15–22% |
| Caryophyllene | 6–13% | 9–12% |
| Farnesene | 0–1% | 0–1% |
| Origin | Australia | United States |
| Purpose | Dual purpose | Aroma |