The book "Fermentation Studies. Beer Diseases, Their Causes and Prevention" by the eminent scientist Louis Pasteur is a rich source for the study of fermentation processes, especially in the context of home brewing. The author examines in detail the diseases that beer can suffer, explains their causes and indicates methods of preventing their development. The book contains a large amount of scientific information that is useful for both novice brewers and professionals in this field. Pasteur strictly follows a scientific approach in his work and presents the material in an accessible language, which makes the book a very valuable source of knowledge for anyone interested in brewing and microbiology.