I don't follow the implication. I think you're suggesting that in France, they're not 100% beef. What are they?

As someone living for 10 years now in the US, and before that 3 decades in the UE: it does seem to me that McDonalds in the US (and most of the fast foods for that matter) tastes worse than in Europe or China (where I've also tried). In'n'Out and proper burger-serving restaurants in the US taste fine, but there's just something wrong with McDonalds, KFC and to lesser extent Burger King, that made me stop eating there.

And generally food in the US kind of sucks... :D

The commenter likes McDonalds better in France. I was just saying that the ingredients aren't any different in the burger.

> they're not 100% beef. What are they?

You really don't want to know that answer, and you really don't want to google that answer. If you do, you might find sites that report McDs is the largest purchaser of cow eyeballs and other less commonly desired parts and pieces. Whether that's being reported by anything in the ballpark of real is up to you. But the jokes have been around for a lot longer than the interweb.

Does that 100% mean that they've sourced their meat from the entirety of the cow's body? Because they sure taste like it.

Mcdonalds claims their patties are "100% beef", and according to the CFR "beef" means "flesh of cattle".

https://www.mcdonalds.com/us/en-us/faq/burgers.html

https://casetext.com/regulation/code-of-federal-regulations/...

They are 100% beef in many places outside of the US, including France.

There is a difference between 100% beef and 100% cow.

I’ve also read this and I can’t explain why in the US it’s like a completely different meal compared to anywhere outside that I’ve tried it.

Meat could be higher quality from wherever they are sourcing it.

Which part is the key question.