Boston's best sandwich values are tucked into the side streets of Chinatown, where a couple bucks buys a multilayered, crunchy Vietnamese sandwich called a Banh Mi. Shops slinging the Banh Mi have ...

Take a bite into one of Dung Vu's banh mi sandwiches, and then try to identify all the tastes and textures. It's harder than you might think. There's the bread, obviously, crusty on the outside, chewy ...