50 Foods, 50 States: The Must-Eat Roadfoods Across America

In the family of overstuffed sandwiches on lengths of horizontal-sliced bread, the Louisiana po' boy boasts the most diverse variations, its main ingredient ranging from roast beef to fried oysters (and sometimes both). Accoutered with lettuce, tomato, mayonnaise, and pickles on a crisp-crusted, lightweight loaf, it is as messy (and as delicious) as a sandwich can be.