The Society for the Preservation of Beers from the Wood (SPBW), founded in 1963, is the oldest consumer-based group interested in stimulating the brewing of, increasing the awareness of, and encouraging the drinking of traditional cask ale. The Society also supports and encourages the use of wooden casks for beer dispense.

A barrel-aged beer is a beer that has been aged for a period of time in a wooden barrel. Typically, these barrels once housed bourbon, whisky, wine, or, to a lesser extent, brandy, sherry, or port. There is a particular tradition of barrel ageing beer in Belgium, notably of lambic beers. The first bourbon barrel-aged beers were produced in the United States in the early 1990s.