Real yogurt, especially probiotic yogurt shelf life of 1 month or less, those shelf life in a few months to a few years of "yogurt", we have to be extra careful when buying, so as not to mis-sell the lactic acid bacteria drinks.

The general sense of yogurt is made from milk (whether fresh milk or recovered milk) fermentation, the ingredients are essential is the fermentation of bacteria. Common lactic acid bacteria are Lactobacillus bulgaricus, Lactobacillus acidophilus, Streptococcus thermophilus and so on. Now yogurt big fight "bacteria" war, usually in the ingredient list of the yogurt fermentation of all the bacteria used to write, look carefully at the ingredient list, you can also understand the yogurt in the end what bacteria, there is no probiotics.