Spalt
Alpha acid
2.5–5.7%
Beta acid
3–5%
Total oil
0.5–0.9 mL
Germany
Cluster
Alpha acid
5.5–9%
Beta acid
4.5–6%
Total oil
0.4–1 mL
United States
Key differences
When to pick Spalt
- Aroma-focused - ideal for dry hopping
When to pick Cluster
- Higher alpha acid - stronger bittering
- Higher beta acid - smoother, longer-lasting bitterness
- More myrcene - pronounced citrus and resinous notes
- Versatile - works for both bittering and aroma
Aroma profile and use
Shared aromas
EarthyFloral
Only in Spalt
NobleHerbal
Only in Cluster
Sweet
Property
| Property | Spalt | Cluster |
|---|---|---|
| Alpha acid | 2.5–5.7% | 5.5–9% |
| Beta acid | 3–5% | 4.5–6% |
| Co-humulone | 22–29% | 33–43% |
| Total oil | 0.5–0.9 mL | 0.4–1 mL |
| Myrcene | 20–35% | 38–46% |
| Humulene | 20–30% | 15–20% |
| Caryophyllene | 8–13% | 8–10% |
| Farnesene | 12–18% | 0–1% |
| Origin | Germany | United States |
| Purpose | Aroma | Dual purpose |