For a zesty kick, add a pinch of red pepper flakes to the dressing. If you don't have pickle brine on hand, a splash of white vinegar or lemon juice can be used as a substitute. For a lower-fat option, substitute some of the mayonnaise with plain Greek yogurt. Add a tablespoon of chopped fresh dill or parsley for freshness. Taste and adjust seasonings as needed. Some pickles are saltier than others.