BLAUW is an export beer, a type of bottom-fermented beer that was very popular in the 1950s. At that time, heavy manual labor was very important, and the workers regularly drank beer. Export had a lower alcohol content than regular pilsner at that time. This way, they could drink more beer without their work performance suffering. Today, the export beer from Brewery Omer Vander Ghinste is named BLAUW, because this was the color of the clothing that the workers wore to work.