Guinness is one of the most iconic beers in the world. And while it may be most popular around St. Patrick’s Day, it truly is a beer for the entire year. Much lighter than you’d think and low in calories (only 125 calories to be exact), it’s a delicious beer that is steeped in tradition as well as pomp and circumstance. And much of the theatrics around the beer have to do with how it is poured. It’s been said that you can tell if you’re in a legitimate pub simply by whether or not they know how to pour a proper Guinness (Diageo, the parent company of Guinness, is an investor in VinePair). So we went to the source, the worldwide Guinness ambassador, to learn just how a proper Guinness should be poured, both from the tap as well as from the nitro can. Watch the video below, and see how it’s done.