E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Cup,
in the university of Cambridge, means a mixture of strong ale with spice and a lemon, served up hot in a silver cup. Sometimes a roasted orange takes the place of a lemon. If wine is added, the cup is called bishop; if brandy is added, the beverage is called cardinal. (See BISHOP.)
