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A beer tap is a valve, specifically a tap, for controlling the release of beer. While in other contexts, depending on location, a “tap” may be a “faucet”, “valve” or “spigot”, the use of “tap” for beer is almost universal. This may be because the word was originally coined for the wooden valve in traditional barrels. Beer served from a tap is largely known as draught beer, though beer served from a cask is more commonly called cask ale, while beer from a keg may specifically be called keg beer.
