Yogurt is a creamy dairy product made by fermenting milk with beneficial bacteria, primarily Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus. This fermentation process thickens the milk and develops a tangy flavor. Yogurt is rich in probiotics, which support digestive health, and is enjoyed worldwide in many forms—such as stirred, set (cup-set), or drinking yogurt. It can be plain or flavored and is used as a snack, ingredient in cooking, or a healthy breakfast option.