When beer is poured into a glass, the liquor will produce white and delicate foam, which is shaped like a beautiful white flower, so it is often called "the flower of beer". Generally, the foam of beer will last for 2 to 4 minutes, and some beer foam will last for as long as 5 to 6 minutes.

Although Belgian beer has its own specific style, Belgians love craft brewing, which means that brewers are considered artists in Belgium, and these artists rarely copy existing beer styles.

During the main fermentation period, the focus of technical control is temperature, concentration and time, which restrict each other and complement each other. When the fermentation temperature is low, the concentration decreases slowly and the fermentation time is long.

Control of sterile airBacteria are generally attached to the dust in the air and spread through the air flow, so it is necessary to purify the air; it is advisable to collect air at high altitude, use filter cotton to perform rough filtration, compression, cooling, multi-stage oil-water separation,