This version, which was created with the help of my daughter, is really quite tasty. We even use it on battered fried chicken.
Combine all ingredients into a bowl. Taste and adjust seasoning.
Refrigerate 2 hours before use to allow the flavors to blend and develop.
Tell everyone you forgot to make it and hide it in the back where no one will look.
Fry sauce is a culinary tabula rasa: add as you see fit. If you prefer a zippy spicy sauce, add some Sriracha or blackening spice-hold off on the salt if you chose this path. Add straight-up cayenne or a good smoked paprika.
Go nuts and have fun.