Hiroko began her business, Hiroko's Kitchen, in her native Japan in 1989.
Since 1999 her base of operation has been in New York City.

Hiroko writes cookbooks and food articles for general circulation and professional magazines including Saveur, National Culinary Review, Art of Eating and others. She offers professional cooking classes at vocational and avocational cooking schools throughout the United States and Europe.

Hiroko has worked as a culinary consultant to the P. F. Chang's China Bistro group providing menu development, recipes and staff training for their initial entry into the Japanese restaurant business, Hiroko developed a new line of product imports for one of the largest Japanese food and restaurant equipment importers and distributors, Mutual Trading Company. This work has resulted in the establishment of a unique premium food product line for the company. The line includes products researched and found by Hiroko and now available in the US only through her customer, Mutual Trading Company. Hiroko frequently appears on radio and television throughout the United States in her role as a proponent and authority on Japanese cuisine. She has been featured on the Food Network, Roker on the Road series, several episodes of PBS television programs, PBS national radio and local radio and television stations across the country. Hiroko is also featured on the popular foodie Website DEVOUR TV produced by an on line video company at www.devour.tv . There she instructs viewers on the preparation of easy-to-make delicious Japanese dishes. In the future look for Hiroko's new Japanese cooking series on PBS or cable TV.