Mix all ingredients together in a large mixing bowl. Season to taste with more salt, pepper and sugar.
8 large hard-boiled eggs, ¼ cup mayonnaise, 2 teaspoons lemon juice, 2 ribs celery, 4 scallions, 1 teaspoon dried Parisien Bonnes Herbes blend, ¼ teaspoon ground black pepper, ½ teaspoon kosher salt, 1 teaspoon Dijon mustard, ½ teaspoon granulated sugar