Created by Vietnamese street vendors a century or so ago, banh mi is a twist on the French snack of pate and bread that is as brilliant as it is addictive to eat. Who can resist the combination of crisp baguette, succulent filling, and toppings like tangy daikon and carrot pickles, thin chile slices, refreshing cucumber strips, and pungent cilantro sprigs? You'll have ample opportunities to customize your sandwich with filling options such as...