Opal Hops

Dual: Aroma and BitteringAlpha 5.0 - 8.0%Germany

Opal is a standout jewel of German hop breeding, representing a sophisticated evolution of the classic Hallertau tradition. Developed by the Hüll Hop Research Institute in 2001 and released commercially in 2004, this variety was engineered to provide brewers with a more robust and aromatic alternative to heritage landrace hops. While it has faced a slower adoption rate in large-scale commercial breweries, it has become a "hidden gem" in the craft world. Opal distinguishes itself with an exceptionally low cohumulone content and a high concentration of linalool, resulting in a hop that is both technically superior and sensorially stunning—offering the structural integrity needed for crisp lagers and the aromatic complexity required for contemporary farmhouse ales.

The sensory profile of Opal is an elegant and multi-layered arrangement of zesty fruit and refined herbal spice. It leads with a primary, "bright" bouquet of sweet orange, dried apricot, and lemon peel, followed by a sophisticated secondary layer of peppery spice and fresh wildflower honey. As the profile develops, brewers will find a pleasant herbal "snap" and a subtle hint of cedar that remains incredibly clean on the palate. Thanks to its balanced oil composition and lack of bitterness harshness, Opal delivers a polished, rounded bitterness and a crisp, effervescent finish. It is the definitive choice for brewers seeking a timeless "Noble" quality with a modern, fruit-forward twist.

Substitution Tip

If you can't find Opal, the best alternatives are East Kent Golding, Hallertauer Tradition, Styrian Golding, or Tettnanger.

At A Glance

ProfileHerbal, Spice, Orange, Dried Apricot, Lemon Peel, Peppery Spice, Wildflower Honey, Cedar
PurposeDual: Aroma and Bittering
Alpha Acid5.0 - 8.0%
SubstitutesEast Kent Golding, Hallertauer Tradition, Styrian Golding, Tettnanger
Pairs withAmarillo® (to bridge into more aggressive American citrus profiles), Saphir (to enhance the tangerine and floral notes), Tettnanger (to deepen the herbal spice)
Beer StylesPilsner, Helles, Witbier, Saison, Hefeweizen, Belgian Ale

General Information

Country
Germany
Storage Stability
Retains 75% alpha acid

Brewing Chemistry (Acids & Oils)

Alpha Acid
5.0 - 8.0%
Beta Acid
3.5 - 5.5%
Cohumulone
13.0 - 17.0%
Total Oil
0.8 - 1.5 ml/100g
Myrcene
20.0 - 45.0%
Humulene
20.0 - 30.0%
Caryophyllene
8.0 - 15.0%
Farnesene
< 1.0%
Linalool
0.9 - 1.5%
Geraniol
~0.2%
Total Polyphenols
3.0 - 4.5%
Xanthohumol
0.3 - 0.5%

Growth & Cultivation

Yield
1,600 - 1,900 lbs/acre
Maturity
Mid season
Resistant
Powdery Mildew (excellent)
Tolerant
Verticillium Wilt (high), Downy Mildew (high)
Growth Rate
High / Vigorous
Cones
Medium-sized, firm, and moderately dense. The cones are noted for their high lupulin saturation and
Ease of Harvest
Excellent; the bines are structurally strong, and the variety is perfectly suited for modern mechani
Sex
Female
Leaf Color
Medium green
Side Arm Length
20" - 30" (medium)

Opal Aroma/Flavor Profile

Aroma
CitrusTropical FruitStone FruitApple/PearMelonBerryFloralSpicy/Herbal

Discovery Tags

Origin

Last Updated
  • 2026-04-18 13:29:32