This blue cheese dressing is legendary in Chase's family. It's originally from Admiral Risty in Rancho Palos Verdes, but you can also find it at almost every one of Chase's extended family gatherings. Chase's parents have been going there since their first date and over the years they've celebrated birthdays, anniversaries, and heck, Chase's sister was almost born in the dining room (Morgan, this just occurred to me that this may explain your love of blue cheese dressing???) Chase's mom introduced me to this six years ago (I'm convinced you're not welcome in the family unless you consume copious amounts of this dressing) and I've never been the same. At Admiral Risty it is served on an ice cold plate with iceberg lettuce, the freshest tomatoes, and right-out-of-the-oven croutons, but that's never stopped me from also putting it on burgers, dipping veggies directly in it, eating it for breakfast, etc. If you're ever in Palos Verdes you can go to Admiral Risty and grab the recipe yourself because they hand out recipe cards at the hostess stand (going there is also highly recommended for the ocean views, steak & german chocolate cake... Chase would want me to say right here that there's more to life than cheese. I disagree with his sediments regarding cheese as the essential food group, but the german chocolate cake IS phenomenal).
The recipe card you get at Admiral Risty calls this "Ralph's Blue Cheese Dressing" (the founder of Admiral Risty), but I only know it as "Collette's Blue Cheese Dressing". Collette is not only my future mother-in-law and my personal cheesemonger, but chiefly responsible for getting countless people addicted to this dressing so I don't think Ralph would mind. Until you find yourself in Palos Verdes, Collette's Blue Cheese Dressing recipe is below...
Collette's Blue Cheese Dressing
1 1/2 cups mayonnaise
2 cups sour cream
2/3 cup buttermilk
1 tablespoon parsley flakes
1 tablespoon red wine vinegar
1/4 teaspoon white pepper
1 tablespoon sugar
1 teaspoon garlic powder
1 tablespoon + 1 teaspoon worcestershire sauce
1 1/2 teaspoon onion powder
ample blue cheese crumbles (the recipe calls for a pound)
Combine all ingredients except blue cheese and mix thoroughly.
Add bleu cheese and combine.
Cut head of iceberg lettuce into quarters.
Top with desired toppings & serve.