Start by gathering all your ingredients, which include white pepper, MSG, salt, onion salt, salad oil, water, wine vinegar, mayonnaise, sour cream, and blue cheese.
In a mixing bowl, combine the white pepper, MSG, salt, and onion salt. Mix these together to ensure an even distribution of flavors.
Add in the salad oil and water to the spice mixture. Stir well until everything is combined.
Next, blend in the wine vinegar, mayonnaise, and sour cream. These ingredients will create the creamy base of your dressing.
Now it’s time to add the blue cheese. Mash it into the mixture, ensuring that it is well incorporated. You can leave some chunks for texture if you like.
Once everything is well mixed, taste the dressing. Adjust the seasoning if necessary, adding more salt or pepper according to your preference.
Transfer your Blue Cheese Dressing into a storage container. Cover it and let it sit in the refrigerator for at least an hour. This allows the flavors to meld beautifully.
When ready to serve, give it a good stir. Enjoy it over your favorite salad, as a dip, or drizzled over grilled meats.
Any leftovers? Store them in the refrigerator for up to one week. Just remember to stir again before using.