In a large mixing bowl, combine the mayonnaise, sour cream, and buttermilk.
Add Frank’s Red Hot Sauce and freshly squeezed lime juice to the mixture.
Mince one clove of garlic and add it along with the dehydrated onion flakes.
Stir in the kosher salt, dried dill, ground black pepper, and cayenne pepper.
Mix thoroughly until the dressing is smooth and all ingredients are evenly incorporated.
Cover the bowl and refrigerate for at least 1 hour to allow the flavors to meld together.
Serve chilled with your favorite salads or as a dip for appetizers.