Po boy sandwich or the poor boy sandwich is a sandwich which hails from Louisiana, USA and is predominantly made with meat and seafood. The po boy is a submarine sandwich and is served on a baguette like Louisiana French bread. The Louisiana French bread is the key ingredient that makes this sandwich different from the others. Served hot, the po boy sandwich usually contains meats like Louisiana hot sausage and roast beef and seafood like fried shrimp, oysters, soft shell crab, catfish and crawfish. Some versons of the po boy sandwich are served with roast beef gravy.