when there were very few independent breweries left, and most production had gone over to filtered and pasteurised ales served under carbon dioxide pressure ("keg beer"). Popularity Cask conditioned ale remains popular within the UK, particularly in traditional pubs. In 2019, 420 million pints of cask ale were sold in the UK, accounting for 13.5% of all pints. Cask ale is seen as 'Britain's National Drink', and its 'Britishness' is often seen as an important factor in promoting cask. See also Draught beer Real Ale Twats References External links The Directory of UK Real Ale Breweries - Information on real ale brewers in the UK CAMRA's Good Beer Guide Beer in the United Kingdom Types of beer Beer culture