Throughout the Plains, all the way to the West Coast, drive-ins and burger joints, as well as loosemeats shops in Siouxland, offer fry sauce to accompany French fries and onion rings. Ranging from Ranch-dressing-white to salmon pink, it is a mixture of mayonnaise and ketchup that can be doctored up with chopped sweet pickles or onions or other spices. A Utah drive-in chain, Arctic Circle, says it first created fry sauce in 1948 from “a tasty, tangy mixture of tomato concentrate, lemon juice, eggs, and a whole bunch of other ingredients.”