Bitter is an English style of pale ale that varies in colour from gold to dark amber, and in strength typically from 3% to 5.5% alcohol by volume.
[1] The term "bitter" has been used in England to describe pale ale since the early 19th century.
During the 20th century, bitter became the most popular type of draught beer sold in British pubs and has been described as "the national drink of England".
[2] In Scotland, bitter is known as either "light" or "heavy" depending on the strength, colour and body.
A survey by SIBA found that in 2020 the average bitter beer strength in the UK was 4.2%.