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How to Make Crème Fraîche {2 Ingredients}

How to Make Crème Fraîche {2 Ingredients}

We can harness probiotic bacteria to make many wonderful things, but crème fraîche is by far the easiest. This nutty, buttery, soured cream can be frustratingly hard to find in prepared form and—if you do happen to find it—can cost you as much as a dollar an ounce. Crème fraîche can be sweetened and whipped into whipped cream or whipped unsweetened until it separates into butter—and the bonus by-product liquid is old-fashioned buttermilk (which is different from the cultured buttermilk used in this recipe).

What is Crème Fraîche and How to Make it?

Crème fraîche is sour cream’s thinner French cousin. Used as a topping, in sauces, or in a variety of other sweet and savory applications, it has a delightful tanginess that comes from bacterial cultures.

There are several different methods for making crème fraîche. In France, the heavy cream used to make it is unpasteurized (raw). It therefore contains natural bacteria, and when allowed to “age” at room temperature, it cultures on its own. In the United States, however, the pasteurization process required of most commercial dairy products means that the crème fraîche must be made in a different manner—that is, via fermentation.

Beneficial bacteria, in the form of cultured buttermilk or a starter, are introduced into cream, transforming it into crème fraîche. One of these guys is Lactococcus lactis (lacto for “milk”), a microbe that is informally classified as the lactic acid bacterium, due to its ability to transform lactose into lactic acid via fermentation. The increase in acid decreases the pH of the cream, changing its flavor and making the environment inhospitable to other, less friendly microbes.

How to Make Crème Fraîche {2 Ingredients}

It’s very easy to make crème fraîche with pasteurized cream. Simply combine buttermilk with heavy cream, and then leave at room temperature for half a day. Though this may seem like an unsafe practice, the bacteria present actually keep it from spoiling. Once made, the crème fraîche can be used in dressings, dips, and even ice cream! (Keep in mind, however, that heating it to higher than 100°F (38°C) will kill most of the beneficial bacteria.)

How to Make Crème Fraîche {2 Ingredients}

How to Make Crème Fraîche {2 Ingredients}

How to Make Crème Fraîche {2 Ingredients}

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Servings: 2 cups

Ingredients

  • 2 cups Heavy Cream
  • 2 tablespoons Cultured Buttermilk

Instructions

  • In a jar with a lid, place the cream and buttermilk; cover securely and shake for 15 seconds. Remove the lid and cover with the cheesecloth, secured with a rubber band or string. Set aside at room temperature for 12 to 24 hours, until thickened similar to sour cream. (This time frame varies depending on the cream and the temperature of your home.)
  • Stir the thickened crème fraîche well. Replace the lid tightly, and refrigerate for at least 6 hours before serving; it will become even thicker as it chills. Store in the refrigerator for up to 2 weeks.

Notes

Notes: Although it is generally recommended to avoid the use of ultra-pasteurized dairy products for culturing, I have found through many test batches that ultra-pasteurized cream works as well as all other types of cream in making crème fraîche.
If using a packaged crème fraîche starter, follow the instructions provided with the starter.
Tried this recipe?Mention @hayley_inthekitchen or tag #hayley_inthekitchen!

How to Make Crème Fraîche {2 Ingredients}

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4 Comments

  1. Wonderful! I was unsure if anyone else in the house would enjoy it so i halved the recipe to 1cup heavy cream and a touch over 1tbsp buttermilk. To put it mildly, it was a big hit. Thank you for sharing this super simple, but amazing recipe.

  2. 5 stars
    I loved this! I used 1 tablespoon buttermilk and 1 cup ultra-pasteurized whipping cream. I shook them together in a mason jar, then left out on the counter for 30 hours. I just screwed on the lid, I didn’t use the cheesecloth. It cultured perfectly into a thick, smooth cream like soft sour cream. After chilling the jar overnight in the refrigerator it had the exact consistency of sour cream and was so delicious!

  3. I’m confused. You said use buttermilk, but the recipe says grass fed butter? I really want to try this.

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