UK
Challenger is one of the few recognized dual-purpose hops combining moderate amounts of alpha acids with a good kettle hop aroma. It is good for a wide variety of beers, including English-style ales, porters, stouts, ESBs, bitters, barleywines, and brown ales.

Possible Substitutions: Perle, Northern Brewer

Technical Specifications:
Aroma: mild to moderate, quite spicy
Alpha Acids: 7 - 10%
Beta Acids: 4 - 4.5%
Co-Humulone: 20 - 25%
Total Oil: 1.0 - 1.7 ml/100g
Myrcene: 30 - 42%
Humulene: 25 - 32%
Caryophyllene: 8 - 10%
Farnesene: 1 - 3%