Homemade Sour Cream Ingredients 2 tablespoons skim milk 1 tablespoon lemon juice 1 cup low fat cottage cheese Directions Place all ingredients in a blender, and combine on medium-high speed until smooth and creamy. Yield: 8 servings– Nutrition Facts Serving size: 2 1/2 tablespoons Amounts Per Serving Calories: 27 Total fat: Less than 1 g Saturated fat: Less than 1 g Cholesterol: 2 mg Sodium: 117 mg Calcium: 24 mg Iron: Less than 1 mg SOURCE: National Heart, Lung, and Blood Institute (part of the National Institutes of Health and the U.S. Department of Health and Human Services)