How did Sloppy Joe originate?
Sloppy Joe was invented by a cook named Joe. He invented it at a cafe in Sioux City as a variant of the popular loose meat sandwich. The only difference it has with loose meat sandwich is that, it has tomato sauce.
The Original Sloppy Joe Sandwich was invented by a cook named Joe at a cafe in Sioux City, Iowa, as a variation of the popular "loose meat" sandwich (which does not contain tomato sauce).