What Is Guinness Made Of? Also known as a ‘meal in a glass’ or ‘liquid bread’ some people joke that Guinness is one of the major food groups in Ireland. But at only 198 calories per pint the joke is on them as it’s actually lighter than most other beers with slightly less calories per 100ml than orange juice or semi-skimmed ... Similar Editorial : The Best by Johnathan Bakers. | Source : Beers List