What do the bacteria lactobacillus burglaricous and streptococcus thermophilos have in common?
Both are used in the production of yogurt. “Lactobacillus delbrueckii subspecies bulgaricus (until 1984 known as Lactobacillus bulgaricus) is one of several bacteria used for the production of yogurt. It can also be found in other naturally fermented products.” http://en.wikipedia.org/wiki/Lactobacillus_bulgaricus “Streptococcus salivarius subsp.