Here is the book that Frank J. Prial in the New York Times Book Review called "delightful...it weaves history, geography, wine, and some of the fascinating people who make it into a downright enthralling tale." It is the grape that has been stepped on, but never crushed. Long thought to produce workaday wines at best, the zinfandel grape has triumphed in the last decade, with stylish, sophisticated wines from the Ravenswood and Ridge wineries,...