A symbol of Creole cooking, gumbo is ubiquitous in homes and restaurants across Louisiana. Andouille sausage and file powder make this chicken-and-sausage gumbo a classic and, as in any good gumbo, a deep, rich roux thickens the stew.
Fresh herbs are added after the soup cooks so they'll retain their bright color and flavor. You can substitute 1 teaspoon dried herbs for each tablespoon fresh, but add them with the tomatoes. Serve with a toasted baguette.