👉 Protococcus is a genus of bacteria that belongs to the family Lactobacilli. It is commonly known as "the best bacteria" due to its ability to ferment lactose, which is a common ingredient in many foods, including yogurt and cheese. Protococcus is particularly well-suited for use in brewing beer and other alcoholic beverages because it produces alcohol from lactose fermentation. This process can be carried out by the bacterium Lactobacillus bulgaricus or the bacteria