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How to Make Sour Cream

How to make sour cream (or creme fraiche) from scratch with only 2 ingredients.

Course Condiment
Cuisine American
Keyword creme fraiche, sour cream
Prep Time 5 minutes
Cook Time 1 day
Total Time 1 day 5 minutes
Servings 8 servings
Calories 107 kcal
Author Andrea Vaughan


  • 1 cup heavy cream
  • 1/4 cup buttermilk


  1. Combine heavy cream and buttermilk in a glass bowl or mason jar and give it a good stir.  Cover with a piece of cheesecloth or a clean kitchen towel, and secure it with a rubber band. 

  2. Allow to sit in a warm environment, ideally 80-85 degrees, for 24 hours.  When it’s ready, it’ll smell slightly tart and will have thickened.  While it isn’t as thick as commercial sour cream, it should be thick enough to cling to a spoon and ribbon as you tilt the spoon over. 

  3. Once you have your desired thickness, you should store sour cream in the refrigerator.  It should last 3-5 days refrigerated.  

Nutrition Facts
How to Make Sour Cream
Amount Per Serving
Calories 107 Calories from Fat 99
% Daily Value*
Fat 11g17%
Saturated Fat 7g35%
Cholesterol 42mg14%
Sodium 19mg1%
Potassium 32mg1%
Carbohydrates 1g0%
Sugar 1g1%
Protein 1g2%
Vitamin A 450IU9%
Vitamin C 1mg1%
Calcium 28mg3%
* Percent Daily Values are based on a 2000 calorie diet.