Yogurt is produced by a special starter culture in which two major bacteria are present in a 1:1 ratio: S. therrnophilus and L. bulgaricus.

• 酸奶是由一种用特殊的发酵剂生产的产品,发酵剂由嗜热性链球菌与保加利亚乳杆菌以1：l比例构成的。