– 6 hard-boiled eggs , peeled and diced
– ¼ cup mayonnaise
– 2 Tablespoons minced red onion
– 1 Tablespoon minced fresh parsley leaves
– ½ medium celery rib , chopped fine
– 2 teaspoons Dijon mustard
– 2 teaspoons juice from 1 lemon
– ¼ teaspoon salt
– black pepper , to taste