I have not been to a Mc Donalds in a long time. The smell makes me feel bad now.I try to avoid Mickey D's, but sometimes you just need a simple and quick bite. I've only eaten it in Europe, but I'd say the taste is pretty much the same in every country. After writing that sentence, I looked up a Big Mac, and apparently the ingredients are manufactured all over Europe, so I would assume the stuff comes from the same factory in pretty much every European restaurant.
Luckily we have In and Out Burgers here. They are all fresh meat and you can watch them making frys from fresh potatoes from the drive through.