10 fast-food menu items you didn't know were more than 50 years old
From the Big Mac to Chick-fil-A's iconic chicken sandwich, these fast-food menu items are over half a century old.
Irene Jiang/Business Insider
- Many popular fast-food items were invented decades ago and remain unchanged.
- Chick-fil-A's chicken sandwich uses the chain's original recipe.
- Other fast-food chains have similar menu items from when they first opened.
Many chains are experimenting with new menu items, like Taco Bell's lineup of Cheez-It items, as well as expanding upon old favorites ...
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