McDonald's adds new ‘Grandma McFlurry' onto menus for a limited time

Last year, it was the Grimace Shake. This year, it's a new McFlurry...or maybe, an older one? The limited-edition treat, called the "Grandma McFlurry," hits McDonald's restaurants in Chicago and beyond May 21, a press release said. The desser, was created with the special lady in mind, saying the Chicago-based burger chain is a tried and true place to take grandchildren.