Garlic and Sapphires by Ruth Reichl (2005)

Subtitled The Secret Life of a Critic in Disguise, this is the third in a series of food-related biographies by Reichl.  The first, Tender at the Bone: Growing up at the Table, is a lovely family memoir;  Comfort Me With Apples: More Adventures at the Table is about her beginnings as a food writer and her romantic relationship.  This is my favorite of the three because it covers her work as the New York Times food critic and the disguises she adopts to dine incognito.  A fascinating look into the work of a restaurant critic.