1In a medium-sized bowl, combine the crumbled blue cheese, mayonnaise, sour cream, and white wine vinegar.
Stir the ingredients together until well combined and smooth.
Taste the dressing and adjust the seasoning if necessary, adding salt and pepper to taste.
Transfer the dressing to a jar or airtight container and refrigerate for at least 30 minutes to allow the flavors to meld.
Serve the dressing over your favorite salad or as a dip for vegetables.