Unique Potato Salad

Description
This is a recipe I obtained from an Estate sale. I obtained it when I purchased the family collection from the Manes Estate in Venus, Texas in 1981.
 * Contributed by Catsrecipes Y-Group

Ingredients

 * 6 medium red potatoes
 * ½ cup red onion chopped
 * ½ teaspoon salt
 * ¼ teaspoon freshly ground black pepper
 * 2 teaspoons celery seed
 * 1 tablespoon granulated sugar
 * 1 tablespoon yellow mustard
 * ⅛ cup milk
 * 3 tablespoons fresh parsley
 * ¼ cup mayonnaise

Directions

 * 1) Cook potatoes in boiling water with their skins on until tender.
 * 2) Cool then peel and cube.
 * 3) Add onion, salt, pepper, sugar and mustard.
 * 4) Stir in milk and mayonnaise until desired consistency is reached.
 * 5) Add parsley and celery seed last then chill and serve.