Chilled Celery Soup

1 tablespoon olive oil,
3 stalks celery, chopped
1 leek, sliced
1 medium russet potato, sliced
1 cup water or broth
salt & white pepper
1/4 cup milk or cream

Heat the oil in a saucepan and add leeks and celery. Sweat for 5 minutes. Add potato, water and salt. Simmer until everything is tender. Blend and strain soup. Chill, stirring in milk or cream just before serving.

Yields 4 appetizers