Although this blue cheese vinaigrette contains no mayonnaise, buttermilk or sour cream, it's incredibly creamy and tastes a lot like traditional blue cheese dressing. What's the secret? Making it in the blender, which emulsifies the oil, vinegar, and cheese into a smooth, creamy dressing. Gorgonzola is a favorite cheese for this blue cheese vinaigrette recipe, making a dressing that is spicy and sweet but not overly pungent. If you're a fan of blue cheese dressing, you probably also like warm blue cheese sauce. Poured over chicken, steak or potatoes, blue cheese sauce is the type of decadent sauce that makes you want to lick your plate.