The style of ground meat certainly was, but, there are no records or references to it being cooked as a patty and served as a sandwich in Hamburg.
The first references and evidence we have for it absolutely come from the US, wether it be menus, mentions in news papers, or other textual evidence.
Lots of different claims as to who did it first, but who ever it was, all the historical evidence shows that the concept originated in the US. Probably none of the people who claim to have invented it actually did, but, we do have records from the time that show the concept spreading between diners along the east coast.
That’s mighty confident!
My understanding is that there are plausible competing theories, one of which is that hamburgers were iniquity made in Hamburg.
See e.g. https://en.wikipedia.org/wiki/History_of_the_hamburger or like a book or something
The style of ground meat certainly was, but, there are no records or references to it being cooked as a patty and served as a sandwich in Hamburg.
The first references and evidence we have for it absolutely come from the US, wether it be menus, mentions in news papers, or other textual evidence.
Lots of different claims as to who did it first, but who ever it was, all the historical evidence shows that the concept originated in the US. Probably none of the people who claim to have invented it actually did, but, we do have records from the time that show the concept spreading between diners along the east coast.