Kim Bhasin | Oct. 1, 2012, 3:19 PM | 20,787 | @ The Myth About McDonald's Burgers That Don't Rot - Business Insider A customer asked on McDonald's Canada's fantastic Q&A page why McDonald's burgers don't rot, and the company responded with quite a thorough answer. It's a common thing folks say about McDonald's burgers. Once in a while, an experiment pops up that shows how a burger or entire Happy Meal can remain unchanged for months. So, what's the truth about the everlasting burgers? McDonald's burgers do rot under certain conditions. Read more: The Myth About McDonald's Burgers That Don't Rot - Business Insider with some other interesting links.