The most familiar wine is beer, and one major feature of beer is foam (Beer Head). Well, what is the the beer foam? Why the same beer with different foam?

Beer is produced from natural raw materials through a series of physical, chemical and biological logical processes. There are a lot of variables in raw materials and at each stage of the brewing process, so breweries must use sound judgment and appropriate techniques to ensure that beer is produced

What Is An Infection?Infection refers to the introduction or presence of undesirable microorganisms in beer or raw materials, When these undesirable microorganisms are made into beer and start to compete for sugar with cultured yeast, infection will occur. Bacteria or undesirable microorganisms in w