All foods Kefir Dairy Nutrition per 100 g Plain Plain Nutrient Amount per 100 g Calories 61.1 kcal Protein 3.19 g Fat 3.4 g Saturated fat 2.33 g Available carbohydrates 4.5 g Sugars 3.42 g Water 87.6 g Potassium 155 mg Magnesium 12.7 mg Calcium 127 mg Iron 0.05 mg Source Ciqual 2025 ยท Food code 19865: Milk kefir.