A Pint of Plain is Your Only Man
John Henry Donovan
Guinness ceased production of its porter at the end of April 1973. Interestingly, a pint of porter was poured from 2 separate barrels to get the creamy head.
The refrain "A pint of plain is your only man" from Flann O'Brien's poem, "The Workman's Friend" has become a famous quotation and means a pint of stout will solve all your problems.