My Foolproof Best Chicken Salad Recipe with a Secret

Ingredients

• 1 ½ pounds (680g) boneless, skinless chicken breasts or cooked chicken meat
• Water (for boiling/poaching)
• 1 teaspoon (5g) salt
• ½ teaspoon (2.5g) black pepper
• ¾ cup (170g) mayonnaise
• 2 tablespoons (30ml) Dijon mustard
• 1 tablespoon (15ml) lemon juice, freshly squeezed
• 1 teaspoon (5ml) apple cider vinegar
• ½ teaspoon (2.5g) celery salt
• ¼ teaspoon (1.25g) black pepper
• 1 cup (115g) celery, finely diced
• ½ cup (75g) red grapes, halved or quartered
• ¼ cup (30g) red onion, finely diced (optional)
• ¼ cup (15g) fresh parsley, chopped