Overview: Ibaraki Prefecture, which stretches along the Pacific Ocean, is known for its diverse nature. Along with the sea, expansive plains, forests and lakes have made Ibaraki a leading agricultural and fishery producer in Japan -- feeding its people, and Tokyo residents. On this trip, Japanese chef David Wells, originally from the United States, tastes his way through the area, enjoying the flavors of fall and winter. The highlights? Hitachi Aki Soba noodles in the prefecture's north, Hoshi-imo dried sweet potato on the coast, and Kan-shijimi clams in Lake Hinuma.