Ingredients:
Melt the butter in a heavy soup pot over
medium heat. Add the leeks, onion, and escarole; cook, covered until the
vegetables are softened but not browned, 5 to 10 minutes.
Add the milk and the potatoes, season with salt and pepper. Simmer,
covered, until the potatoes are very soft and start to fall apart, about
30 minutes. You can serve this chunky soup as is-country style-or puree it
in a blender or food processor for a more elegant presentation.
Serve hot, sprinkled with minced parsley.