
Stir together. In a mixing bowl, whisk together the mayonnaise, sour cream, buttermilk, apple cider vinegar, Worcestershire sauce, garlic, salt and pepper, until creamy.
Add the blue cheese. Add the blue cheese and continue whisking until well combined. It's meant to have some small clumps. Note: This dressing is meant to be thick and creamy, but if you'd like a thinner consistency, you can add a bit of water to thin it down.
Use immediately or store. Use the blue cheese dressing immediately on your favorite salad or store in the refrigerator in an airtight container for up to 1 week.