Ahtanum (US)

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Yakima Valley bred Ahtanum™ is sweet and peppery with a piney-citrus aspect. Warmly aromatic and moderately bittering, Ahtanum™ is a hop of distinction. It is often likened to Cascade though without going that far, it makes more sense to say that Cascade may be an acceptable substitute. In comparison, Ahtanum™ is less bitter, its alpha acids are lower and its grapefruit essence is significantly more pronounced. It really is more akin to Willamette, with its notes of lemon and grapefruit. Ahtanum’s distinct citrus character led to it being used as the singular hop in Dogfish Head's Blood Orange Heffeweisen and Stone Brewing Pale Ale.

Characteristics Distinct citrus chracter with notes of grapefruit
Purpose Aroma
Alpha Acid Composition 4%-6.3%
Beta Acid Composition 5%-6.5%
Co-Humulone Composition 30%-35%
Country US
Cone Size Small
Cone Density Compact
Seasonal Maturity Mid
Yield Amount 1775-1950 kg/hectare (1585-1740 lbs/acre)
Growth Rate Moderate
Resistant to Resistant to downy mildew and Peronospora
Susceptible to
Storability Retains 50%-55% alpha acid after 6 months storage at 20ºC (68ºF)
East of Harvest
Total Oil Composition 0.8-1.2 mL/100g
Myrcene Oil Composition 50%-55%
Humulene Oil Composition 16%-20%
Caryophyllene Oil 9%-12%
Farnesene Oil 0%-1%
Substitutes Cascade, Amarillo®, Simcoe®, Centennial, Willamette
Style Guide India Pale Ale, Pale Ale, Heffeweisen, American Ales, Lagers, Californian Common, Bitters