- 2 pounds red potatoes, cut into 1-inch chunks
- 1 pound sweet potatoes, peeled and cut in 1-inch chunks
- 1/4 cup red wine vinegar
- 1 tablespoon spicy brown mustard
- 1 1/4 teaspoons salt
- 1/2 teaspoon pepper
- 1/2 cup reduced-fat mayonnaise
- 1/4 cup 2% milk
- 2 celery ribs, chopped
- 1 small red onion, chopped
- 1/3 cup minced fresh parsley
- Place the red potatoes in a large saucepan and cover with water; bring to a boil. Reduce heat; cover and cook for 2 minutes. Add sweet potatoes; return to a boil. Reduce heat; cover and cook 8-10 minutes longer or until potatoes are fork-tender.
- In a large bowl, whisk the vinegar, mustard, salt and pepper. Drain potatoes; add to vinegar mixture and stir gently to coat. Cool.
- In a small bowl, combine mayonnaise and milk. Stir in the celery, onion and parsley. Gently stir into cooled potato mixture. Serve immediately or cover and chill.