1. Cook potatoes in boiling water to cover 30 to 40 minutes or until tender; drain and cool 15 minutes. Peel potatoes, and cut into 1-inch cubes.
2. Stir together potatoes, celery, and next 3 ingredients in a large bowl.
3. Stir together mayonnaise and next 6 ingredients; gently stir into potato mixture. Serve immediately, or cover and chill up to 12 hours.