This is one of the few dressings that I make from scratch, but it is very good. If you like blue cheese dressing, you'll love this one. I like to serve it with spinach salad, walnuts, and bacon.
3/4 cup sour cream
1 1/3 cups mayonnaise
1 teaspoon Worcestershire sauce
1/2 teaspoon dry mustard
1/2 teaspoon garlic powder
1/2 teaspoon salt
1/2 teaspoon ground black pepper
4 ounces blue cheese, crumbled
In a large bowl, whisk together the sour cream, mayonnaise and Worcestershire sauce. Season with mustard, garlic powder, salt and pepper. Stir in blue cheese. Cover, and refrigerate for 24 hours before serving.