Idaho GemvsCentennial
Idaho Gem and Centennial are popular dual purpose hops. Below you'll find a comparison of alpha and beta acids, aroma profiles and oil composition.
Idaho Gem
Alpha acid
11–14%
Beta acid
5–7%
Total oil
1.3–2.3 mL
United States
Centennial
Alpha acid
7–12%
Beta acid
3.5–5.5%
Total oil
1–3 mL
United States
Key differences
When to pick Idaho Gem
- Higher alpha acid - stronger bittering
- Higher beta acid - smoother, longer-lasting bitterness
- Richer, more complex aroma profile
When to pick Centennial
No clear differences - both varieties have a similar profile. Choose based on availability or country of origin.
Aroma profile and use
Shared aromas
Citrus
Only in Idaho Gem
PineappleCherryCandiedHerbalSpicyMintStone fruitRedberryMojitoSweet
Only in Centennial
PineFloralGrapefruitTangerine
Property
| Property | Idaho Gem | Centennial |
|---|---|---|
| Alpha acid | 11–14% | 7–12% |
| Beta acid | 5–7% | 3.5–5.5% |
| Co-humulone | 40–45% | 23–30% |
| Total oil | 1.3–2.3 mL | 1–3 mL |
| Myrcene | - | 55–65% |
| Humulene | - | 10–20% |
| Caryophyllene | - | 5–7% |
| Farnesene | - | 0–1% |
| Origin | United States | United States |
| Purpose | Dual purpose | Dual purpose |