Prepare the Base: In a mixing bowl, combine mayonnaise, buttermilk, Dijon mustard, and white vinegar. Whisk the mixture until smooth and well-blended.
Add the Flavors: Incorporate garlic powder, onion powder, dried dill, dried parsley, paprika, cayenne pepper, salt, and pepper. Continue whisking until all ingredients are evenly distributed.
Chill and Let It Set: Cover the bowl and refrigerate the Kickin Ranch for at least 30 minutes. This will enhance the overall taste by melding the flavors together.
Serve and Enjoy: Once chilled, your homemade Jimmy John's Kickin Ranch is ready to serve. Use it as a zesty dipping sauce, salad dressing, or a flavorful topping for your favorite dishes.