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Cashmere and Comet are two American hop varieties that sit at opposite ends of the approachability spectrum, Cashmere is one of the smoothest, most drinkable American aroma hops; Comet is one of the most aggressive and unusual, with a grapefruit-wild character that polarizes opinion. I’ve used both in deliberate experiments and the contrast between them is as instructive as any comparison in the American hop catalog for understanding what smooth versus wild means in hop character.
Cashmere vs. Comet: key specifications compared
Cashmere: Developed by Washington State University hop breeding program, released 2013 (cross of Cascade and Northern Brewer). Alpha acids: 7.7–9.1% (moderate). Beta acids: 6–7%. Cohumulone: 23–28% (low, clean bittering). Total oil: 1.4–2.0 mL/100g. Primary components: myrcene (40–50%), linalool (high, contributes smooth floral quality), beta-pinene (contributes citrus-coconut). Primary flavor/aroma: lemon, lime, coconut, mild tropical fruit, soft, Cashmere is notable for being one of the smoothest and most approachable of all American aromatic hops. The linalool-coconut-lime combination produces a character that reads as clean, balanced, and crowd-pleasing rather than aggressive. Its Cascade-Northern Brewer heritage is detectable: Cascade’s citrus softened by Northern Brewer’s herbal character, with additional coconut from beta-pinene. Excellent in session beers and styles where hop character should be present but not aggressive. Comet: Developed by USDA, released 1974; largely abandoned by commercial brewers through the 1980s–2000s when it was considered too aggressive; rediscovered by craft brewers in the 2010s. Alpha acids: 9–12% (moderate-high). Beta acids: 3–5%. Cohumulone: 39–44% (very high, produces rough, assertive bitterness; not suitable for significant bittering additions). Total oil: 2.0–2.5 mL/100g. Primary components: myrcene (50–65%, very high), farnesene (10–15%). Primary flavor/aroma: grapefruit, wild citrus, gasoline/fuel (when aged or stressed), green, almost catty in some batches, Comet is genuinely unusual. Fresh, well-stored Comet produces intense grapefruit-wild citrus that is aggressive and distinctive; stressed or aged Comet produces off-notes (fuel, cat, sulfur) that explain its decades of commercial abandonment. It is a high-risk, high-reward hop that suits brewers who want unconventional character.
Smooth vs. wild: using Cashmere and Comet
Use Cashmere when: you want hop character that enhances without challenging, session IPAs, pale ales, American wheat beers, and any style where the hop contribution should be smooth, clean, and approachable. Cashmere is an excellent dry hop for beers where the audience includes non-craft-beer drinkers: the lemon-lime-coconut softness is immediately palatable without the intensity that can alienate Citra or Simcoe dry-hopped beers. Cashmere at 0.5–0.75 oz/gallon dry hop in a session pale ale produces a hop character that most tasters describe positively on first exposure. It also performs well as a 10–15 minute addition in wheat beers and light ales. Use Comet when: you are specifically seeking aggressive, wild grapefruit character that stands out as unconventional. Fresh Comet in a single-hop pale ale at 0.5 oz/gallon dry hop produces an assertively grapefruity, wild-citrus result that is unlike any other hop variety. It suits experimental beers, IPAs explicitly marketed as aggressive, and any recipe where making a distinctive statement is more important than broad palatability. Critical caveat for Comet: freshness is everything. Buy only fresh-crop Comet and freeze immediately. Aged or poorly stored Comet develops fuel, sulfur, and cat character from myrcene oxidation, at very high myrcene content (50–65%), the oxidation products are particularly unpleasant. A Comet dry hop from fresh well-stored hops versus aged mediocre-storage hops can produce radically different results. If you can’t guarantee freshness, don’t use Comet. Cashmere is far more forgiving of storage and age.
Common Questions
Why do some hops develop off-flavors when aged and others don’t?
The primary factor is myrcene content, myrcene is the most abundant and most reactive terpene in hop oil, and it oxidizes readily when hops are exposed to oxygen, light, or temperature fluctuations. High-myrcene hops (Comet at 50–65%, El Dorado at 75–80%, fresh Cascade at 45–60%) are more vulnerable to oxidation because they have more myrcene to oxidize. Myrcene oxidation produces geraniol, nerol, citronellal, and other compounds; at low levels these add complexity, but at higher levels they produce the off-notes (fuel, musty, catty/onion) associated with aged hops. Low-myrcene hops like Noble varieties (Hallertau at 15–25% myrcene, Saaz at 25–35%) are significantly more stable, this is one reason Noble hops from good storage can retain character for a year or more while fresh American high-myrcene hops degrade noticeably within months of harvest without proper storage. Proper hop storage: sealed oxygen-barrier bags (not just zip-lock), frozen at -18°C (0°F), away from light. Vacuum-sealed and frozen, most hops retain useful character for 12–18 months. High-myrcene varieties like Comet and El Dorado should be used within 6–9 months of harvest even with ideal storage. Homebrew suppliers who display hops at room temperature in loose bins are selling you degraded product, always buy from suppliers who store hops cold in sealed packaging.
