Diana Kennedy shows the range of her imagination here as she concentrates on one amazingly versatile ingredient: the humble tortilla. Her 80 recipes, taken from old Mexican cookbooks and from her own notebooks, range form savory enchiladas, tacos and quesadillas, along with some surprises rarely seen north of the border--marvelous crunchy improvisations. The dishes are enormously varied, alternately rustic and elegant, always delicious and unusual.