In a blender, combine mayonnaise, sour cream, white wine vinegar, lemon juice, and Dijon mustard.

Add garlic powder, onion powder, dried oregano, dried basil, salt, and black pepper.

Blend until smooth and creamy, scraping down the sides as needed.

Taste and adjust seasoning if necessary.

Transfer to a mixing bowl or jar and refrigerate for at least 30 minutes before serving to allow flavors to meld.