In their definitive rendition of the oyster poor boy, the humble Main Street dive called Original New Orleans Po' Boy approaches greatness. They start with a toasted skinny roll, a spatula-full of tartar sauce, a bed of lettuce and a couple of tomato slices. Then come the six golden oysters fresh from the fryer. They fit the bread perfectly. If you eat it there, the oysters are still hot and juicy, so they gush into the lettuce, tomatoes and tartar sauce, creating a moist and creamy texture. This is one of those rare sandwiches in which every bite tastes better than the last. Rarer still is the price: $5.14, with tax.