1 teaspoon tarragon vinegar (or white wine vinegar)
1/4 teaspoon dried tarragon, crumbled
Dash garlic powder
Dash freshly ground black pepper
Dash onion powder
1 tablespoon milk (or to desired consistency)
Instructions
In a medium bowl, combine the mayonnaise, sour cream, and vinegar; mix well. Add the garlic powder, pepper, and onion powder. Add a small amount of milk as needed for consistency.