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Cluster
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About
Cluster is the oldest variety grown in the U.S. The rootstock origin is uncertain. Until the late 1970's, Cluster was one of only a few varieties growing in the U.S. and was planted to most of the hop acreage. Alpha acids content is medium, aroma is strong and storage stability of the alpha acids is among the best in the world. The variety grows with good vigor and cone production. The choice of name may be connected with the way in which the flowers are arranged in clusters. The origin of the rootstock, however, is unknown.
Origin
Not known but possibly the result of a cross between an English variety and an American male hop. The standard US cultivar, improved by mass selection in the mid 1960s.
Flavor & Aroma Characteristics
StrawberryLemon TeaApricotCreamyGrapefruitFloralSpiceBlackberryEarthySweet Fruit
Substitutes
Oil Composition
Myrcene
38-55%
Humulene
15-20%
Acid Profile
Alpha Acid6.0 - 9.0%
Beta Acid4.0 - 6.0%
Co-Humulone37-43%
Technical Details
Total Oil0.7-1.3 mL/100g
HSI0.3
Flavor Intensity6/10
Brewing Usebittering, late addition, dry hop
StorabilityVery good