Potato Leek Soup

Ingredients
- 3 Tbsp unsalted butter
- 2 large leeks
- 3 c rich chicken broth
- 2 large baking potatoes
- 1 12 c watercress
- heavy cream
Directions
- Melt butter
- Add thinly sliced leeks and saute until soft 8 minutes
- Stir in chicken broth and potatoes peeled and sliced au gratin style
- Partially cover simmer for about 10 minutes Using a wooden spoon mash some potatoes against the side of the pan
- Stir in coarsely chopped watercress
- Simmer for 1 minute Serve in bowl
- Season with salt pepper and swirl 1 tablespoon heavy cream