Creme Fraiche

Directions

1. 1
   Combine the creams and whisk lightly together.
2. 2
   Cover bowl loosely with plastic wrap, and leave in a warm place overnight, in cold weather this may take up to 24 hours.
3. 3
   At the end of the maturing time the cream mixture will be thick and subtly tart.
4. 4
   Transfer to refridgerator and chill for at least 4 hours before using.
5. 5
   Will keep 2-3 weeks chilled, and the tartness will continue to develop.