Hallertau Magnum is the second largest hop variety and the main high-alpha variety grown in Germany. Magnum was bred in 1980 at Huell, the German Hop Research Instititute, from the American variety Galena and the German male 75/5/3. Magnum is commonly used as a base bittering hops in many recipes- especially in Lagers, Pilsner types, and Stouts (very appropriate as a first hop addition).