GaiavsCTZ

Gaia (bittering) and CTZ (dual purpose) serve different purposes. Comparing acids, aromas and character helps pick the right hop.

Gaia

Bittering

Alpha acid

12–15%

Beta acid

5–10%

Total oil

1.5–2.5 mL

Czech Republic

CTZ

Dual purpose

Alpha acid

14.5–17%

Beta acid

4.5–5.5%

Total oil

2.5–4.5 mL

United States

Key differences

When to pick Gaia

  • Higher beta acid - smoother, longer-lasting bitterness
  • Bittering workhorse - efficient in the mash

When to pick CTZ

  • Higher alpha acid - stronger bittering
  • More essential oils - more intense aroma
  • More myrcene - pronounced citrus and resinous notes
  • Versatile - works for both bittering and aroma
  • Richer, more complex aroma profile

Aroma profile and use

No shared aromas - the varieties have divergent profiles.

Only in Gaia

HoppySpicy

Only in CTZ

Black currantLicoriceCurryCitrusCannabisDank

Property

PropertyGaiaCTZ
Alpha acid12–15%14.5–17%
Beta acid5–10%4.5–5.5%
Co-humulone20–29%28–35%
Total oil1.5–2.5 mL2.5–4.5 mL
Myrcene23–37%45–55%
Humulene2–4%9–14%
Caryophyllene9–12%6–10%
Farnesene5–7%0–1%
OriginCzech RepublicUnited States
PurposeBitteringDual purpose

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