XXXX (beer)
XXXX (pronounced four-ex) is a brand of Australian beer brewed in Milton, Brisbane, by Queensland brewers Castlemaine Perkins (now a division of the Japanese-owned company Lion). It enjoys wide popularity in the state of Queensland, where it is commonly found on-tap in pubs and bars. The XXXX brand was introduced by Castlemaine in 1924, and is a throwback to the long-standing tradition of using Xs to indicate the strength of an ale. The brand name also built upon XXX Sparkling Ale introduced in 1878.