Be mine, bánh mì: salty, crunchy, and hot. In my family, this classic street-vendor Vietnamese-French sandwich is experiencing something close to an addiction. Although bánh mìs are available at several places around town, I like the taste, inexpensive price ($3.50), and close proximity (to me) of the ones at Zen International Market & Tea, 10225 Park Road. My favorite is the Vietnamese barbecue pork with pickled daikon radishes, fretfully hot julienned strips of jalapeño, and a sprig of cilantro. But there are six choices on the menu including a very good densely-packed French cold cut, and a lemongrass pork sandwich.