This is Jazz Fest food at its best. There are plenty of crawfish bread recipes out there, with all kinds of crazy ingredients, but this one is my favorite, because it's simple, delicious, and the closest I have found to the famous Fest dish. You can use thawed frozen crawfish tails. But check the packaging, and make sure they came from Louisiana. If you buy them from anywhere else, they won't be as good, and Louisiana crawfish farmers will come and haunt your dreams until you go mad.