Morton's Blue Cheese Dressing

From the legendary Morton's Steak House. Simply amazing Blue Cheese Dressing. As much as I love to lighten things, this just isn't the same using light ingredients. This calls for Durkee's Famous Sauce, if you can't locate Durkee's, I have another recipe for a similar sauce called Mustard-Mayonnaise Sauce. Cook time includes overnight chilling.

• Ready In: 24 hrs 15 mins
• Serves: 15
• Yields: 4 cups

Ingredients

• 2  cups mayonnaise (not Miracle Whip)
• 1  cup sour cream
• 2  tablespoons sour cream
• 1⁄4 cup buttermilk
• 1  teaspoon  Durkee's sauce (sold in the condiment aisle or with the dressings)
• 1⁄2 teaspoon seasoning salt
• 7  ounces blue cheese, crumbled (about 1.5 C)
•  salt and pepper

Directions

1. In a large mixing bowl, whisk together the mayonnaise and sour cream.
2. Add the buttermilk, Durkee sauce, and seasoned salt.
3. Whisk until well mixed.
4. Season to taste with salt and freshly ground black pepper and whisk again.
5. Using a rubber spatula, gently fold in the blue cheese.
6. Transfer to a storage container with a tight-fitting lid and refrigerate for at least a day and up to four days.