Hop
Columbus
A dank, resinous high-alpha American hop, sold interchangeably as CTZ, and used both for bitterness and for pungent aroma.
Also known as CTZ, Tomahawk, Zeus.
Columbus, Tomahawk and Zeus are commercially grouped as CTZ and are frequently sold as a single lot. Whether they are genetically identical has been argued over for years; in practice the trade treats them as interchangeable.
Aroma and flavour
Descriptors are impressions rather than analytical results. BeerHQ rates this characterisation as commonly reported.
Belongs to
Analysis
| Alpha acid | 14–18% |
|---|---|
| Cohumulone | 28–35% |
| Total oil | 2–4 ml/100 g |
| Purpose | dual purpose |
| Origin | United States |
| Storage stability | good |
How it is used
- Bittering (early boil). Added at or near the start of the boil, where long exposure isomerises alpha acids into bitterness and drives off aroma.
- First wort. Added to the kettle as it fills, before the boil. Associated with a rounder, smoother bitterness.
- Whirlpool / hop stand. Steeped below boiling after flameout. Extracts aroma and flavour with limited additional bitterness.
- Dry hop. Added after the boil, during or after fermentation. Contributes aroma and flavour with essentially no isomerised bitterness.
If you like Columbus
Hops with comparable character. Similarity and substitutability are different questions, so each entry says which it is: a hop can smell alike and still change the beer if its alpha acid is far off.
Chinook 12–14% alpha · editorial
A comparable resinous high-alpha alternative.
Not the same: lacks the allium of Columbus; 3 points lower in alpha acid, so a like-for-like weight swap would change the bitterness.
Smells alike, but the alpha acid differs enough that a like-for-like swap would change the bitterness.
Apollo 15–20% alpha
Shares pine and resin, earth and wood, citrus with Columbus; a bittering variety though it bitters harder.
Not the same: lacks the allium of Columbus.
Close enough in both aroma and alpha acid to swap in a recipe.
Summit 16–19% alpha
Shares earth and wood, allium, citrus with Columbus; a dual-purpose variety at a comparable alpha acid.
Not the same: lacks the pine and resin of Columbus.
Close enough in both aroma and alpha acid to swap in a recipe.
Zeus 13–17% alpha
Shares pine and resin, earth and wood with Columbus; a bittering variety at a comparable alpha acid.
Not the same: brings herbal that Columbus does not; lacks the allium and citrus of Columbus.
Close enough in both aroma and alpha acid to swap in a recipe.
Nugget 12–14% alpha · editorial
A clean high-alpha substitute for the bittering role.
Not the same: brings herbal that Columbus does not; lacks the allium and citrus of Columbus; 3 points lower in alpha acid, so a like-for-like weight swap would change the bitterness.
Smells alike, but the alpha acid differs enough that a like-for-like swap would change the bitterness.
Straight substitutes
Close enough in both character and alpha acid to swap at a similar weight. Substitution is directional and imperfect — these are the nearest available options, not equivalents.
- Apollo — Shares pine and resin, earth and wood, citrus with Columbus; a bittering variety though it bitters harder.
- Summit — Shares earth and wood, allium, citrus with Columbus; a dual-purpose variety at a comparable alpha acid.
- Zeus — Shares pine and resin, earth and wood with Columbus; a bittering variety at a comparable alpha acid.
Used in
- West Coast IPA
The dry, clear, aggressively bitter interpretation of American IPA, built on pine and grapefruit with the malt stripped right back.
- Double IPA
IPA scaled up: more strength, more hops and more bitterness, while staying dry enough to remain drinkable.
- Black IPA
An IPA with dark malt for colour and a light roast edge, keeping full citrus and pine hop character.
- Belgian IPA
American hop intensity fermented with expressive Belgian yeast, producing pepper and fruit alongside citrus and pine.
- American barley wine
A strong malt-dense ale with assertive American hop bitterness and citrus-pine aroma alongside the caramel depth.
- American stout
A bold, hop-forward stout combining strong espresso roast with American citrus and pine hop character.
- Imperial stout
The strongest stout: dense, viscous and intensely roasted, with dark fruit, chocolate and substantial alcohol warmth.