01 - In a medium bowl, mix mayonnaise, minced garlic, lemon juice, and Dijon mustard until well blended.
02 - Fold in chopped parsley if using, ensuring even distribution.
03 - Incorporate salt and black pepper, stirring until the mixture is smooth and uniform in flavor.
04 - Taste the sauce and adjust seasoning as desired for balance.
05 - Cover and refrigerate for at least 30 minutes to allow flavors to develop fully before serving.