Leek and Potato Soup

Makes 6 servings. 3 c sliced leeks 3 c diced peeled potatoes 2 qts water 1 Tbsp salt ¼ c heavy cream or 3 Tbsp butter, softened 2 Tbsp fresh minced chives or parsley Simmer leeks and potatoes in water with salt, partially covered 40-50 minutes, or until tender. Mash...