Poke Cookbook: The Freshest Way to Eat Fish, ThenMartha Cheng Hardcover, 96 pp. Poke, the traditional Hawaiian snack of raw fish seasoned with soy sauce and sesame oil, has hit the mainland. On the islands, its the casual dish that brings everyone togetherbut now you can bring these flavors into your own kitchen with 45 recipes for traditional poke, modern riffs, bases, bowls, and other local style accompaniments. From classic Shoyu Ahi to creative Uni, Lychee, and Coconut to vegetarian Mango and