Mosaic is a daughter of Simcoe, bred by the Hop Breeding Company (the same Yakima Chief/John I. Haas/Select Botanicals joint venture behind Citra) and released in 2012. It inherited Simcoe's genetic complexity but expressed it very differently — where Simcoe reads pine-and-passion-fruit, Mosaic became known for one of the widest, most complicated aroma profiles of any commercially available hop, which is a large part of why "mosaic" was chosen as its name.
A wide range inherited from Simcoe
Mosaic's 10.5-16% alpha acid range is both high and wide, which means the low and high ends of a given crop year can genuinely change how a recipe performs — a bag reading near 10.5% behaves closer to a moderate dual-purpose hop, while one reading near 16% can carry real bittering weight on its own. It's used across the full range of boil timings: early for bitterness, late and dry-hop for its aroma complexity, and frequently both in the same recipe.
Tropical fruit, blueberry, and pine in one hop
Tropical fruit is the headline note, but Mosaic's profile also carries blueberry, pine, and tangerine in a combination that shifts depending on how it's used — late-boil and whirlpool additions tend to bring out the brighter tropical and citrus notes, while heavy dry-hopping pulls more of the blueberry and resinous pine forward. This complexity is exactly why Mosaic is one of the most commonly single-hopped varieties in modern hazy IPA: a recipe built entirely around Mosaic doesn't read as one-dimensional the way a single-note hop can.
Why single-hop hazy IPAs lean on Mosaic
Hazy IPA and New England IPA are Mosaic's primary home, frequently as the sole or lead hop given how much aromatic ground it covers alone, though it also pairs well with Citra (its rough cousin in flavor register) and with Simcoe (its literal parent) for beers wanting pine structure alongside the fruit.
Citra and Galaxy cover different parts of the range
Citra is the closest substitute in overall character, sharing the tropical-fruit-forward profile though without Mosaic's blueberry and pine notes — a Citra swap will read brighter and more purely citrus-tropical, missing some of Mosaic's depth. Galaxy is the second common substitute, leaning further into passion fruit and peach with a different, more singular citrus lean than Mosaic's multi-note complexity.
Dry-hop creep
Mosaic is one of several modern hops recognized for meaningful enzyme activity carried over from the plant itself, which can convert a small amount of otherwise-unfermentable dextrin left in the beer after primary fermentation — a phenomenon brewers call "hop creep." In a heavily dry-hopped hazy IPA using a large Mosaic charge, this can nudge the final gravity down slightly and the ABV up after packaging if the beer isn't given time to fully finish before it's bottled or canned, which is worth accounting for in a recipe that leans hard on Mosaic for a big dry-hop addition. Check the current Certificate of Analysis before sizing a bittering charge — with a range this wide, the midpoint of 10.5-16% is a poor stand-in for the actual lot, and running the real number through the IBU calculator against both the Tinseth and Rager formulas will show how much that spread can move the final bitterness estimate.
Sourcing and cost
Mosaic's popularity in the hazy IPA boom has kept demand consistently high relative to acreage, and as a proprietary variety it typically carries a premium over public-domain hops like Cascade or Willamette.