Yamaguchi was born and raised in Tokyo

Tokyo

, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

, Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 but now lives in the U.S. State of Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

.

After graduating from the Culinary Institute of America

Culinary Institute of America

The Culinary Institute of America is a non-profit culinary college located in Hyde Park USA, founded in 1946. The CIA also has branch campuses in St. Helena, California, and San Antonio, Texas, as well as a campus in Singapore. It is a not-for-profit academic institution of higher learning...

 in Hyde Park

Hyde Park, New York

Hyde Park is a town located in the northwest part of Dutchess County, New York, United States, just north of the city of Poughkeepsie. The town is most famous for being the hometown of U.S. President Franklin D. Roosevelt....

, New York

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

, he spent time in Los Angeles

Los Ángeles

Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

 in apprenticeships at L'Escoffier and L'Ermitage under the late master chef Jean Bertanou. He was soon elevated to executive chef status with stints at Le Serene and Le Gourmet. He then opened the Euro-Asian 385 North in West Hollywood, featuring Asian presentations of French classical themes.