Citra Hop Profile: Aroma, Dosage Rates, and Use in NEIPA and American Pale Ale

Citra was released in 2008 by the Hop Breeding Company and became, within roughly a decade, the default aroma hop of American craft beer. That popularity has a chemical explanation rather than a marketing one: Citra sits at an unusual intersection of high alpha acids and extreme myrcene dominance, which means one variety can do bittering, whirlpool and dry hop duty in the same recipe without the beer tasting like three different hops arguing.

The spec sheet, and what each number actually does

Read that table as a shape, not a list. Alpha of 12% is comfortably above the database median of 8.9% but well short of the 15% figure that marks the 90th percentile — Citra is a strong dual-purpose hop, not a pure alpha workhorse. The low beta acids (around p20) matter mostly for storage: beta acids oxidise into bitter-ish compounds during ageing, and Citra's aged bitterness tends to fade rather than turn harsh. The alpha:beta ratio of roughly 3:1 is high, which is one reason poorly stored Citra loses aroma noticeably before it loses punch.

The myrcene story is the whole story

The single most consequential number is myrcene at 60–70% of total oil. Against the corpus median of 42.3%, and a 90th percentile of 60%, Citra sits at or above the top decile of all 329 catalogued varieties — the upper limit of 70% is literally the database maximum. Meanwhile humulene at 7–13% falls near the 10th–20th percentile, against a median of 18.5%.

That combination — top-decile myrcene, bottom-quintile humulene — is why Citra smells the way it does. Myrcene carries the green, resinous, citrus-peel, mango-skin character; humulene carries noble, woody, herbal, "spicy" tones. Citra has almost none of the latter. Where a German aroma hop might run 30–40% humulene and 25% myrcene, Citra inverts the ratio roughly five-fold. There is no earthy or noble undertone to hide behind, which is exactly why Citra beers taste so immediate and so unsubtle.

Citra is also low in farnesene (0–1%), sitting near the corpus median of 0.5% — so none of the green-apple, lime-leaf lift you get from farnesene-forward varieties. And note the citrus statistic in the corpus: citrus is the single most common descriptor across the database, appearing in 142 of 329 varieties. Citra is not unusual for being citrusy; it is unusual for being citrusy at that oil concentration with nothing else in the way.

Sensory profile: what you actually get in the glass

• Front and centre: grapefruit pith, lime zest, tangerine.
• Second layer: yellow peach, cantaloupe melon, passion fruit.
• The signature: gooseberry and a faint catty/blackcurrant note from polyfunctional thiols — 4MMP and 3MH — which are present in Citra at unusually high levels.
• Almost absent: pine, resin, wood, earth, herbal spice.

Those thiols deserve a paragraph. Citra is a thiol-rich variety, and much of its perceived "tropical" intensity comes not from free thiols but from bound precursors (cysteine and glutathione conjugates) released by yeast β-lyase activity during fermentation. Practical consequence: the same Citra dose yields more aroma when you dry hop into active fermentation than when you dry hop a finished, cold beer. If you want the thiol payoff, get roughly half your dry hop charge in while there are still 2–4 °P of extract left to ferment.

Dosage: real numbers per style

All figures below are total Citra in g/L of finished beer. Convert to oz/gal by dividing by 7.5.

A worked example for a 20 L batch of American Pale Ale at 1.052 OG, targeting 38 IBU with 12% alpha Citra: about 7 g at 60 minutes gives you roughly 22 IBU; 50 g at whirlpool (78 °C, 20 min) adds an estimated 12–16 IBU depending on your utilisation model; 70 g dry hop contributes negligible measured IBU but adds perceived bitterness and a distinct "hop burn" if you exceed roughly 8 g/L. That's 127 g total, or 6.4 g/L.

Whirlpool temperature is a flavour dial, not a detail

Myrcene boils at 167 °C but is volatile enough to be steam-stripped aggressively above about 90 °C. Because Citra's oil is 60–70% myrcene, the difference between a 90 °C and a 72 °C whirlpool is larger for Citra than for a humulene-dominant hop.

For NEIPA I default to 78 °C for 25 minutes. For West Coast IPA, 88 °C for 20 minutes gives a firmer, slightly more isomerised bitterness that suits the drier finish.

Citra in NEIPA

Citra's thiols and high myrcene make it the archetypal NEIPA hop, but the dose curve is not linear. Total hop loading above roughly 16 g/L on a 6.5% beer reliably produces hop burn — a rasping, astringent palate scrape from polyphenols and hop particulate — and past about 10 g/L of dry hop, additional grams buy diminishing aroma. Two other Citra-specific traits to plan around:

• Hop creep. Dry hop enzymes (amylase, β-glucosidase) degrade residual dextrins, restarting fermentation. Expect 0.3–0.8 °P of extra attenuation and a diacetyl spike at 6–10 g/L dry hop. Keep the beer at 18–20 °C for 48–72 hours after the dry hop rather than crashing immediately.
• Two-charge scheduling. Charge one at high krausen or 2–3 °P from terminal (40–50% of the dry hop) for biotransformation; charge two at 18 °C after terminal gravity, 36–48 hours contact, then crash. Longer than 72 hours total contact and you start extracting grassy, vegetal polyphenol character.

Water: 150–200 ppm chloride against 75–100 ppm sulfate, chloride:sulfate around 2:1, pushes Citra's peach and melon forward and softens the grapefruit pith.

Citra in American Pale Ale

APA is where Citra's alpha acids earn their keep, because you can build the entire beer from one variety. A defensible SMaSH: 95% pale malt, 5% carapils or 8% Vienna, 1.048 OG, 38 IBU, US-05 or a clean English strain at 19 °C, and Citra at 60 min / whirlpool / dry hop as in the table above. Sulfate-forward water (200 ppm sulfate, 60 ppm chloride) here, not chloride-forward — APA wants the bitterness crisp.

Dry hop 3–4 g/L for 3 days at 18 °C. Below 2 g/L in a pale ale Citra reads as generic "citrus hop"; above 5 g/L in a 1.048 beer the hop outruns the malt and you get a thin, oily finish.

Substitutions and blending

Nothing replaces Citra one-for-one, because nothing else combines that myrcene level with the thiol load. Practical blends, adjusted for alpha:

My preferred working ratio for a "better than Citra alone" pale ale is 60% Citra / 40% Mosaic in the dry hop, which keeps the lime-grapefruit top note but deepens the mid-palate.

Storage and handling

Citra's HSI-based stability is middling: expect roughly 25–35% alpha loss after six months at 20 °C, but aroma degrades faster than that — myrcene is the first compound to go, oxidising toward cheesy and oniony notes. Store vacuum-sealed at −18 °C and buy by crop year. A Citra lot that smells of onion or garlic in the bag will taste worse in the beer, and no dosage adjustment will fix it.

Rule of thumb: for Citra, the freshness of the lot changes the beer more than a 20% change in dosage. Buy the best lot you can, then dose it modestly.