Amethyst
Alpha acid
3.5–6%
Beta acid
7–8%
Total oil
0.4–1 mL
Czech Republic
Zeus
Alpha acid
13–17.5%
Beta acid
4–6.5%
Total oil
2.4–4.5 mL
United States
Key differences
When to pick Amethyst
- Higher beta acid - smoother, longer-lasting bitterness
- Aroma-focused - ideal for dry hopping
When to pick Zeus
- Higher alpha acid - stronger bittering
- More essential oils - more intense aroma
- More myrcene - pronounced citrus and resinous notes
- Bittering workhorse - efficient in the mash
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Amethyst
CitrusEarthySpicy
Only in Zeus
Black currantLicoriceCurryPungent
Property
| Property | Amethyst | Zeus |
|---|---|---|
| Alpha acid | 3.5–6% | 13–17.5% |
| Beta acid | 7–8% | 4–6.5% |
| Co-humulone | 20–28% | 28–40% |
| Total oil | 0.4–1 mL | 2.4–4.5 mL |
| Myrcene | 41–43% | 45–60% |
| Humulene | 18–20% | 9–18% |
| Caryophyllene | 5–7% | 6–11% |
| Farnesene | 0–1% | 0–1% |
| Origin | Czech Republic | United States |
| Purpose | Aroma | Bittering |