A yard of ale or yard glass is a very tall beer glass used for drinking around 2+1⁄2 imperial pints (1.4 L) of beer, depending upon the diameter.
The glass is approximately 1 yard (91.4 cm) long, shaped with a bulb at the bottom, and a widening shaft, which constitutes most of the height.[1]
The glass most likely originated in 17th-century England, where the glass was known also as a "long glass", a "Cambridge yard (glass)" and an "ell glass". It is associated by legend with stagecoach drivers, though was mainly used for drinking feats and special toasts.[2][3]
Drinking a yard glass full of beer as quickly as possible is a traditional pub game; as with the toe of a beer boot, the bulb at the bottom of the glass makes it likely that the contestant will be splashed with a sudden rush of beer towards the end of the feat.[citation needed] The fastest drinking of a yard of ale in the Guinness Book of Records is 5 seconds.[4]