Great American Potato Salad

Ingredients

• (3 or 4 medium) russet potatoes
  2 pounds
• plus ½ teaspoon salt
  1 tablespoon
• distilled white vinegar
  2 tablespoons
• rib of celery
  1 medium
• celery seed
  ¾ teaspoon
• mayonnaise
  ¾ cup
• powdered mustard
  ¾ teaspoon
• minced onion
  2 tablespoons
• minced fresh parsley leaves
  2 tablespoons
• ground black pepper
  ¼ teaspoon
• sweet pickle relish
  3 tablespoons