Crème Fraîche
Crème fraîche is heavy cream that has been cultured and thickened with a live enzyme like the one found in buttermilk. It is thick and smooth with a rich tangy flavor. Th e advantage of cooking with crème fraîche (as opposed to sour cream) is that it will not separate when boiled. Crème fraîche is easy to make and is amazingly versatile. Stir it into a vinaigrette for a creamy, tangy dressing. Flavor it with herbs and a touch of salt for a perfect garnish for a soup. Use it to thicken and enrich a pasta sauce or braise. A potato gratin is sublime when made with crème fraîche. For dessert it can be sweetened with sugar, honey, or maple syrup to make a simple sauce. It can be whipped to make a soft whipped cream (be sure not to overwhip it; it will become grainy, just like heavy cream). Mix with melted chocolate for a great frosting (page 386). And it makes delicious ice cream.