Creme Fraiche: 2 Cups Whipping Cream and 1 Tablespoon Buttermilk. Mix together in covered jar and shake 2 minutes. Let stand at room temperature 8 hours, or until thick. Place in refrigerator.
Deglaze vegetable pan with reduced wine. Add vegetables with their pan juices and Creme Fraiche. Cook 3 minutes and season to taste with salt and pepper.
Scallops should not be overcooked. Remove scallops and vegetables from pan and reduce sauce to desired thickness over medium-high heat.
If more sauce is desired, add a bit more heavy cream and butter an continue to reduce. Return scallops and vegetables to sauce and serve. Garnish with chervil and/or parsley.