How to Make It
To prepare the dressing, combine the first 6 ingredients in a small bowl.
To prepare the salad, place potato in a saucepan, and cover with water. Bring to a boil, reduce heat, and simmer 9 minutes or until tender. Drain and cool. Combine the dressing, potato, celery, parsley, peas, and chives in a large bowl, and toss well.