Easily the most iconic food from Vietnam, the banh mi sandwich is widely available at carts stationed along the street. The dirty little secret about banh mi in Vietnam is that the bread is often terrible. You pick up a loaf and it’s like lifting a cloud (there’s no heft to it, which is a bad thing). But moving on from the shitty bread, the banh mi is a magical food item. Cold cuts (bologna, ham, mortadella) are piled with pickled carrots/daikon, cucumber, cilantro and chilies. A dab of mayo and fish sauce is crucial.