The Yolife Yogurt Starter contains a non-dairy mix of dextrose, Bifidobacterium longum, Lactobacillus acidophilus, Lactobacillus bulgaricus, and Streptococcus thermophilusIt contains 'friendly' bacteria specially chosen to survive passing through the stomach and into the intestinal tract where it is most beneficial.Refer to the Yolife YL-210 user manual for more information.