Instructions: * Note: Celery root is often called celeriac or celery knob. When buying celery roots, choose those the size of a large apple. They should be firm and solid, without decay or soft spots and with a minimum of knobs and rootlets. The leaves that may remain on the root are inedible. Refrigerate the trimmed root in a plastic bag for no more than five to seven days. Before using celery root in dishes where it should stay white, slice, dice or shred it as the recipe instructs and then briefly soak the pieces in water mixed with a squirt of fresh lemon juice. This will prevent discoloration.

Heat butter in medium saucepan over medium-high heat. When hot, add onion. Cook, stirring occasionally, until starting to soften, about 6 minutes. Add broth, celery roots, apple and potatoes. Bring to boil. Simmer, covered, until vegetables are very soft, about 20 minutes.

Pour through sieve, reserving vegetables and liquid. Transfer vegetables and 1 cup liquid to blender, in batches if necessary. Process until pureed. Add remaining liquid and whipping cream, sugar, nutmeg, salt and pepper to taste. Process until as smooth as possible, at least 1 minute. Taste and adjust seasoning. (Can be refrigerated up to 3 days or frozen in airtight plastic container up to 1 month. To serve, gently reheat soup. If too thick, thin with water.)

Ladle into soup bowls and serve hot. Serve this soup as a first course in any menu, casual or formal.

This recipe yields 6 to 8 servings.

NOTES :

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.