Dr Rudi (NZ)

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Originally known as SuperAlpha, the variety was renamed to Dr Rudi in 2012. It was bred from New Zealand Smooth Cone and is largely grown in New Zealand. It was originally released in 1976.

Considered a bittering hop, Dr Rudi is now widely regarded as dual-use and features a grassy, piney, citrus character. It is also well known for its clean and crisp bittering despite its high cohumulone content. Works well in single-hopped beers.

Also Known As SuperAlpha, Super Alpha, Dr Rudi
Characteristics Grass, pine and citrus flavors
Purpose Bittering & Aroma
Alpha Acid Composition 10%-12%
Beta Acid Composition 7%-8.5%
Co-Humulone Composition 36%-39%
Country New Zealand
Cone Size Medium
Cone Density Compact
Seasonal Maturity Early to mid
Yield Amount 1940-1940 kg/hectare (1730-1730 lbs/acre)
Growth Rate Moderate to high
Resistant to
Susceptible to
Storability Retains 60%-70% alpha acid after 6 months storage at 20ºC (68ºF)
Ease of Harvest Difficult
Total Oil Composition 1.3-1.6 mL/100g
Myrcene Oil Composition 29%-48%
Humulene Oil Composition 22%-33%
Caryophyllene Oil 6%-10%
Farnesene Oil 0%-1%
Substitutes Green Bullet
Style Guide Lager, India Pale Ale