Columbus/CTZ Hops – T90 Pellets
Columbus/CTZ is a powerful American dual-purpose hop known for its high alpha-acid content and bold combination of dank, earthy, citrus, spicy and woody characteristics. Additional impressions can include black pepper, resin, herbs and subtle pine.
CTZ refers to Columbus, Tomahawk and Zeus, a group of closely related American super-alpha hops with very similar brewing characteristics. Traditionally valued for efficient bittering, CTZ has also become a popular late-boil, whirlpool and dry-hop variety in assertive American beer styles.
Its concentrated bitterness and pungent aroma make CTZ particularly well suited to West Coast IPAs, Double IPAs, Black IPAs, Imperial Stouts and American Barleywines.
Specifications
- Hop variety: Columbus/CTZ
- Alternative names: Columbus, Tomahawk and Zeus
- Format: T90 hop pellets
- Origin: United States
- Purpose: Dual-purpose and high-alpha bittering
- Alpha acids: Approximately 15–18%
- Beta acids: Approximately 4.5–6%
- Total oils: Approximately 2.0–4.0 mL per 100g
- Cohumulone: Approximately 26–30% of alpha acids
- Parentage: Nugget-derived lineage
- Primary characteristics: Dank, earthy, citrus, spicy, resinous and woody
- Common flavour impressions: Black pepper, herbs, lemon, pine and resin
Recommended Beer Styles and Usage Rates
| Beer style | Aroma or whirlpool addition | Dry-hop addition |
|---|---|---|
| American Pale Ale | 1–3 g/L | 1.5–4 g/L |
| West Coast Pale Ale | 1.5–3.5 g/L | 2–5 g/L |
| American IPA | 2–4 g/L | 3–6 g/L |
| West Coast IPA | 2–4.5 g/L | 3–7 g/L |
| Double IPA | 2.5–5 g/L | 4–8 g/L |
| Red IPA | 1.5–3.5 g/L | 2–5 g/L |
| Black IPA | 1.5–4 g/L | 2.5–6 g/L |
| American Brown Ale | 0.5–2 g/L | 1–3 g/L |
| American Porter | 0.5–2 g/L | 1–3 g/L |
| American Stout | 0.5–2.5 g/L | 1–3 g/L |
| Imperial Stout | 1–3 g/L | 1.5–4 g/L |
| American Barleywine | 1–3 g/L | 1.5–4 g/L |
The quantities above indicate the total hop amount used at each stage. CTZ has a strong, pungent character and will often make up approximately 10–40% of a late-hop blend. It can also be used alone when a deliberately dank, earthy and resinous profile is desired.
Adjust the rates to suit your recipe, brewing system and desired aroma intensity.
How to Use Columbus/CTZ Hops
Bittering
CTZ’s very high alpha-acid content makes it an efficient choice for bittering. It can produce substantial bitterness without requiring a large quantity of hop material in the kettle.
Calculate the required quantity using the exact alpha-acid percentage printed on your packet and the target bitterness of your recipe. Because the current lot is particularly high in alpha acids, carefully check your brewing software before replacing a lower-alpha bittering hop.
Late Kettle and Whirlpool
Add CTZ during the final 10 minutes of the boil or in the whirlpool for dank, earthy, spicy, citrus and resinous character.
Small additions can provide depth and intensity to a hop blend. Larger additions create the assertive pungency associated with traditional West Coast IPAs and Double IPAs.
Dry Hopping
Dry hop after active fermentation has slowed for pronounced dank, earthy, herbal, citrus and resinous aromas.
CTZ can become dominant at high rates. When blending it with fruit-forward hops, using CTZ as approximately 10–30% of the total dry-hop addition can provide structure and pungency without overwhelming the other varieties.
Hop Pairings
CTZ combines particularly well with:
- Cascade for grapefruit, floral and citrus character
- Centennial for lemon, grapefruit and floral notes
- Chinook for pine, spice and resin
- Simcoe for grapefruit, pine and stone fruit
- Citra for mango, lime and tropical citrus
- Mosaic for berry, citrus and tropical fruit
- Amarillo for orange and floral character
- Strata for passionfruit, strawberry and dank notes
- Krush for orange, mango, guava and mixed berries
- Idaho 7 for pineapple, apricot and tropical fruit
Possible Columbus/CTZ Hop Substitutes
Suitable substitutes depend on whether CTZ is being used for bitterness or aroma.
For bittering, alternatives may include Magnum, Warrior, Nugget or Millennium. For late additions, Chinook can provide a similar combination of pine, spice and resin, while Simcoe offers grapefruit, pine and additional fruit character.
Always account for differences in alpha acids when making a substitution, particularly because CTZ is usually much higher in alpha acids than most aroma varieties.
Storage
Store CTZ hop pellets sealed, cold and protected from oxygen and light. After opening, remove as much air as possible, reseal the packet and return it to refrigerated or frozen storage.
CTZ can deteriorate quickly when exposed to oxygen or warm temperatures, making cold, oxygen-free storage especially important.
Frequently Asked Questions
What does CTZ stand for?
CTZ refers to Columbus, Tomahawk and Zeus. These closely related American hops have very similar brewing characteristics and are commonly grouped together under the name CTZ.
What do CTZ hops taste like?
CTZ hops are known for dank, earthy, spicy, citrus, woody and resinous characteristics. Common impressions include black pepper, herbs, lemon, pine and a strong pungent hop aroma.
Are CTZ hops suitable for bittering?
Yes. CTZ is one of the most efficient bittering varieties available due to its very high alpha-acid content. It is particularly useful in IPAs, Imperial Stouts and Barleywines requiring substantial bitterness.
Can CTZ be used for dry hopping?
Yes. CTZ can produce a powerful dank, earthy, citrus and resinous dry-hop aroma. It is commonly used as a smaller percentage of a blend because its pungent character can become dominant at high rates.
Can CTZ be used as a single hop?
Yes. CTZ can provide bitterness, flavour and aroma in a single-hop beer. However, the result will have a distinctly assertive, dank, earthy and resinous American hop character.
What beer styles suit CTZ hops?
CTZ is particularly well suited to American IPA, West Coast IPA, Double IPA, Black IPA, American Stout, Imperial Stout and American Barleywine. Smaller additions can also add depth to Pale Ales, Brown Ales and Porters.
When should CTZ hops be added?
Use CTZ early in the boil for efficient bitterness, late in the boil for earthy and spicy flavour, in the whirlpool for pungent citrus and resin or as a dry hop for its strongest dank and herbal aroma.
Is Columbus the same as CTZ?
Columbus is one of the names included under CTZ, together with Tomahawk and Zeus. These varieties are sold together because their brewing and sensory characteristics are extremely similar.
Is CTZ suitable for West Coast IPA?
Yes. CTZ is a classic choice for West Coast IPA. It provides firm bitterness and the dank, resinous, earthy character that complements citrus and pine varieties such as Cascade, Centennial, Chinook and Simcoe.
