Crawfish bisque—one of the greatest dishes in all of Cajun cooking—is not like any other bisque. It’s not creamy or thickened with rice, as in the classic French style, but it is made with a dark roux. Most of the ingredients, even the crawfish, are combined to form a rough puree, which further thickens the soup. This may seem like a long, involved recipe, but there are no great challenges in it. What comes out is something unforgettable, especially when served with