Name: Creme Fraiche (takes 4 days Serves: makes 2 cups Category: Cuisine: French Source: Ingredients: Combine : 1 cup heavy cream or whipping cream, 1 cup dairy sour cream. Whisk together in a bowl until blended. Pour into a jar, cover and let stand in a warm place until tickened, about 12 hours. Stir well and refrigerate, covered for 36 hours before using. Keeps 7-10 days. Alternate: Use 2 cups heavy cream or whipping cream, and 2 tsp buttermilk (instead of sour cream) Can use in 24 hours.