Beer must be first poured against the inside of the glass and then more strongly into the centre of the glass from a certain height. This is the way to form a lovely head of foam in the glass, which will enhance the taste experience. There are many almost poetic descriptions of the appearance and behavior of the foam. A good beer must have a head which holds for several minutes and rests like a lid over the beer, holding in the aroma until the moment of lifting the glass to your lips and starting to drink. Of course there are beer lovers who prefer their beer without the foamy head.