Ingredients   1 1/2 cups water 5 medium potatoes, peeled and cut up 1 medium celery stalk, sliced (1/2 cup) 1/4 cup water 1 cup milk 3/4 teaspoon salt 1/8 teaspoon white pepper 2 green onions, thinly sliced Directions 1. Heat 1 1/2 cups water to boiling in 3-quart saucepan. Add potatoes and celery. Cover and heat to boiling; reduce heat. Simmer about 20 minutes or until potatoes are tender. 2. Drain liquid into blender. Remove 3 cups cooked vegetables from saucepan; place in blender with liquid. Add 1/4 cup water. Cover and blend about 1 minute until smooth. 3. Stir pureed vegetables back into saucepan. Stir in remaining ingredients; heat over medium heat, stirring occasionally, until hot.