In a bowl, combine ½ cup sour cream, 2 tablespoons fresh lemon juice, and 2 tablespoons mayonnaise.
Add 1 tablespoon chopped fresh chives to the mixture.
Incorporate 1 teaspoon dijon mustard for a touch of tanginess.
Season the dressing with salt and pepper according to your preference.
Whisk all the ingredients together until the dressing is smooth and well combined.
Refrigerate the dressing for at least 1 hour before serving to allow the flavors to develop.