Excellent served cold in summer, the soup also makes a soothing hot starter during the colder months.
Recipe information
Yield
Makes 4 servings
Ingredients
Preparation
Step 1
Coarsely chop watercress leaves and stems seperately. Melt butter in heavy large saucepan over medium-low heat. Mix in onion, parsley sprigs, thyme sprigs, garlic, bay leaf, and watercress stems. Cover; cook until onion is tender, stirring occasionally; about 12 minutes. Add broth and potatoes; bring to boil. Reduce heat cover and simmer until potatoes are very tender, about 25 minutes.
Step 2
Discard parsley, thyme, and bay leaf. Purée soup in processor until smooth. Return soup to same saucepan. Add 1 cup milk and watercress leaves; bring to simmer, adding more milk if soup is too thick. Season with salt and pepper. Transfer to bowl. Chill until cold, about 4 hours.
