Because crème fraîche has a high fat content, that makes it super stable. If you want to make your soup creamier, this stuff won't curdle. A little dollop added to a batch of homemade whip cream, will keep it from separating. In fact, throw a little sugar in it and you don't need whipped cream at all.
It's kind of like sour cream, only so much better. The main difference between sour cream and crème fraîche is that crème fraîche is fattier and thicker than sour cream and Mexican crema. It's richer, nuttier, and tangier than sour cream, and best of all, crème fraîche is super easy to make at home. I always serve this with my Feast of Seven Fishes Pie recipe on Christmas Eve, but you can find so many ways to enjoy crème fraîche. So, let’s give it a try.