This is from the LA Times, part of their series of things to do with their homemade mayonnaise called "Classic Mayonnaise". This is part of their recipe for buffalo wings.
Ingredients
1 cup classic mayonnaise
3/4 cup crumbled Maytag blue cheese
1/4 cup sour cream
1 teaspoon minced garlic
1/4 teaspoon Worcestershire sauce
1 tablespoon fresh lemon juice
1 tablespoon cider vinegar
2 tablespoons buttermilk
Salt and freshly ground pepper to taste
Instructions
In a bowl, combine the mayonnaise, blue cheese, sour cream, garlic, Worcestershire sauce, lemon juice, vinegar, buttermilk, salt and pepper. Refrigerate until ready to use. Makes 1 1/2 cups.