By Michael Tedder The fast-food chain keeps innovating and its latest addition should be very popular with some of its most-devoted fans. The McFlurry seems like it’s been around forever, but as far as McDonald’s menu staples go, it’s relatively recent. A mixture of soft-serve vanilla ice cream and various cookies and candies, the McFlurry is served with a signature spoon with a hole in the handle. Fast food aficionados have often said the dessert is McDonald’s (MCD) – Get McDonald’s Corporation Report answer to Dairy Queen’s Blizzard, but the McFlurry has been around long enough at this point…