In a small bowl or large measuring cup, combine the sour cream, yogurt, mayonnaise, garlic, powder, onion powder, parsley, chives, salt, and cracked pepper. Mix well.
Stir in the white balsamic vinegar; then buttermilk.
Adjust the seasonings to taste, adding another tablespoon of balsamic vinegar if desired. The flavors will become bolder over time.