Challenger hops are a dual-purpose variety that are noted for its pleasant floral and citrus character. Challenger hops were bred and developed by the Wye College in the United Kingdom and was released in 1972. Challenger is the resulting cross of Northern Brewer and a German variety named Zattler. It went on to become one of the top hops grown in the UK into the 90's, but its acreage has since waned.
Challenger hops are well-suited for classic British ales and lagers, but has also been considered a bittering hop for many styles.