Among my favrite books in this genre are those by Calvin Trillin:

1) "Feeding a Yen: Savoring Local Specialties from Kansas City to Cuzco";

2) "Travels with Alice" (Alice is his wife);

3) "The Tummy Trilogy" ("American Fried", "Third Helpings" and "Alice, Let’s Eat")

4) "Food Lover’s Guide to the Best Ethnic Eating in New York City" (co-authored with Robert Seitsema)