Ex-McDonald’s chef reveals the answer to a big question: Do their burgers ever get moldy?

They may not be the fast-food fountain of youth everyone thinks they are.

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They’re not the fast-food fountain of youth everyone thinks they are. McDonald’s burgers may seem immune to decay, given the avalanche of stories on the noshes looking im-Mac-ulate over time . However, former Golden Arches chef Mike Haracz, who regularly spills industry secrets on TikTok, declared it a huge myth in a recent clip about whether the burger merchant’s products ever go bad and break down.

“When anyone talks about McDonald’s burgers never going bad that is false,” said the content creator, who was a manager of culinary innovation for McDonald’s US menu for four years, developing new items and conducting sensory and quality testing on products. The controversy was sparked in recent years with stories of so-called immortal burgers, most notably a Quarter Pounder in Australia that has never shown signs of decay despite being bought nearly three decades ago. Then there have been the myriad videos of Golden Arches burgers and french fries looking as good as the day they were bought after sitting in a jar for weeks.



However, the industry insider dispelled the legend of the so-called decomposition-defying nosh, instead chalking up their longevity to a dry environment coupled with “mold inhibitors” that the corporation adds into the food to preserve their shelf life. “When everyone talks about them pulling out food from behind a seat that’s been there for a year or whatever, it’s a combination of dehydration and the fact McDonald’s cooks their bur.