Add Yahoo as a preferred source to see more of our stories on Google. hands holding a cheeseburger - Alexander Spatari/Getty Images The birth of the all-American hamburger may still be up for debate.

Forget the onion rings and french fries, both of which are of the generic, big-brand, straight-out-of-the-bag variety, but the burger, griddled on a flattop (and, yes, I like my burger swatted with ...

The birth of the all-American hamburger may still be up for debate. It could have been Texan Fletcher Davis who invented it in the 1880s, or possibly "Hamburger Charlie" Nagreen of Wisconsin, or maybe ...