The Guinness-endorsed standard pour is a 6-step process, and goes as follows: Step 1 Use a Guinness-branded glass with the harp logo. Step 2 Hold the glass on the bottom with your pointer finger on the harp. Aim the spout at the harp, at a 45° angle. Step 3 Pull the spout toward you and pour until the glass is ¾ full (to the top of the harp logo). Step 4 Let the beer surge, or cascade. According to Guinness, this process takes exactly 1 minute and 32.5 seconds. Step 5 Top off your pint by pushing the tap handle away from you. This limits the power of the flow. The beer should be set straight under the spout during this second pour. Step 6 Serve the beer with the logo facing toward the drinker. To the drinker: Look to the horizon. Stand proud. Enjoy your Guinness. The official word from Guinness is that this entire 6-step process process takes 119.5 seconds in total. Not 119 seconds, not 2 minutes, 119.5 seconds! Be sure to have your stopwatch at the ready. The head size on your Guinness should be between 18-20mm, which is somewhere between 11/16″-12.5/16″. Learn more: https://www.kegworks.com/blog/how-to-pour-a-guinness-the-right-way-but-does-it-really-matter/