S1, E4: For episode 4, we head to New Orleans. Forty years ago, Vietnamese migration to NOLA introduced bánh mì to po' boy country. Now, the lines between two iconic sandwiches are blurring. To find out what happens when you mash up the Mississippi Delta and the Mekong Delta, we spoke to New Orleans legend Curren$y, Times-Picayune writer Brett Anderson, and Banh Mi Boys chef Peter Nguyen.