Kefir and yogurt are sometimes lumped together as being nearly identical products, but this isn’t accurate.
Kefir and yogurt do have a lot in common. They both have similar creamy-but-tart tastes and are traditionally made from dairy (but can be made with alternatives). They also both have plenty of protein, calcium, B vitamins, potassium, and probiotics.
However, they do have significant differences. Kefir typically has more fat than yogurt, but it also has more protein and more probiotics. Kefir is also thinner and is best as a drink. Yogurt has a thicker consistency.
Kefir and yogurt are made differently. Kefir ferments at room temperature, while many types of yogurt start culturing under heat. Kefir contains a larger number of different types of healthy bacteria, and it’s better for the gastrointestinal tract because of this. Kefir’s active yeast also has more nutritional benefits than that of yogurt.