Book excerpt: In his debut cookbook, Joe Gurrera, one of New York's most-beloved fishmongers, and owner of the prestigious Citarella markets is on a mission to show us how easy it is to cook seafood. Customers tell Joe again and again that they're afraid to cook fish. They don't know how to buy it, handle it, or prepare it. Enter JOE KNOWS FISH. This book is a roadmap for novices looking to learn the basics of sourcing and cooking fish. With his easy-to-follow recipes and experience-based tips, Joe takes the intimidation out of cooking seafood.