Amethyst
Alpha acid
3.5–6%
Beta acid
7–8%
Total oil
0.4–1 mL
Czech Republic
Progress
Alpha acid
5–7.5%
Beta acid
1.8–2.7%
Total oil
0.5–0.8 mL
United Kingdom
Key differences
When to pick Amethyst
- Higher beta acid - smoother, longer-lasting bitterness
- More myrcene - pronounced citrus and resinous notes
When to pick Progress
- Higher alpha acid - stronger bittering
- Richer, more complex aroma profile
Aroma profile and use
No shared aromas - the varieties have divergent profiles.
Only in Amethyst
CitrusEarthySpicy
Only in Progress
GrassyMintSweetHoneyBlack currantFruityFloral
Property
| Property | Amethyst | Progress |
|---|---|---|
| Alpha acid | 3.5–6% | 5–7.5% |
| Beta acid | 7–8% | 1.8–2.7% |
| Co-humulone | 20–28% | 25–27% |
| Total oil | 0.4–1 mL | 0.5–0.8 mL |
| Myrcene | 41–43% | 25–30% |
| Humulene | 18–20% | 40–47% |
| Caryophyllene | 5–7% | 12–15% |
| Farnesene | 0–1% | 0–1% |
| Origin | Czech Republic | United Kingdom |
| Purpose | Aroma | Aroma |
Golding