Emerald SpirevsMillennium
Emerald Spire (dual purpose) and Millennium (bittering) serve different purposes. Comparing acids, aromas and character helps pick the right hop.
Emerald Spire
Alpha acid
8.6–13%
Beta acid
3.5–4.5%
Total oil
-
United States
Millennium
Alpha acid
14.5–18.5%
Beta acid
4.3–6.5%
Total oil
1.5–3 mL
United States
Key differences
When to pick Emerald Spire
- Versatile - works for both bittering and aroma
- Richer, more complex aroma profile
When to pick Millennium
- Higher alpha acid - stronger bittering
- Higher beta acid - smoother, longer-lasting bitterness
- 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 Emerald Spire
PeachFruityWhiteGrapesWatermelonBubbleMelonHoneydew
Only in Millennium
PearToffeeFloralResinHerbal
Property
| Property | Emerald Spire | Millennium |
|---|---|---|
| Alpha acid | 8.6–13% | 14.5–18.5% |
| Beta acid | 3.5–4.5% | 4.3–6.5% |
| Co-humulone | 38–39% | 28–35% |
| Total oil | - | 1.5–3 mL |
| Myrcene | 36–37% | 35–55% |
| Humulene | 10–11% | 15–25% |
| Caryophyllene | 7–8% | 8–10% |
| Farnesene | 0–1% | 0–1% |
| Origin | United States | United States |
| Purpose | Dual purpose | Bittering |