With draft beer, it is best to first rinse the glass with cold water. After that, we can set the glass or beer mug at 45 degrees, and pull the handle for pouring the beer. It would be the best for the beer to be poured without interruption, in order to release the CO2 from the beer as successfully as possible. Furthermore, the tap through which the beer passes must not sink in the beer during the pouring, because CO2 is then not released from the beer and it would in that case sit hard on our stomach. When the beer is being poured from a bottle or a can, it would also be the best to first rinse the glass with a beam of water, and then pour the beer in a glass from a height drop distance sufficient to release CO2 from the beer. What exactly are we talking about, check in the video on this link.