Ingredients: Butter or margarine or oil, (1" diam) leek cleaned and, Mushrooms coarsely chopped, Salt or to taste, Potatoes cut in small, Water, Garlic cloves, Fresh watercress large,, OPTIONAL ADDITIONS, 1% low-fat milk (1 cup), OR soy milk at room, Freshly ground black pepper, OPTIONAL GARNISH, Sour cream and/or, Red bell pepper thin strips, ...