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 |