Chef Paul Prudhomme's Louisiana Kitchen.
The reason I love this cookbook is the man's knowledge of cooking. Chef Paul will tell you everything that should be happening while you're cooking, smell, look, taste, etc.. at certain stages. I've really learned a ton about cooking from this book! The Chicken and Tasso Jambalaya recipe is one of my favorites. I cook all of my Jambalayas this way now, which is, after sauteeing ingredients, add rice and liquid, finish in the oven, similar to a Paella. Most recipes finish Jambalaya on the stove top, I think it comes out far better from the oven. I've never made a bad recipe from this book, and most are phenomenal! The Crawfish Etouffee I had from K-Paul's during Mardi Gras was one of the best things I've ever eaten, and certainly the best Etouffee. Speaking of which, if your going to New Orleans for Mardi Gras, K-Paul's usually opens their window at night and serves a variety of different items to-go for about $6 or $7 bucks a-pop! Last year they had Crawfish Etouffee, Chicken etouffee, Blackened Drum, as well as a few others, including my favorite heart stopper, Deep-Fried Ham Po Boy! That's right folks bread and all, battered and fried! Atkins be damned! Pure heaven!
Anyway, if you've never checked out this ground breaking book, do so! It's very popular, so you should be able to find it anywhere, including the local library!