The book explains each dish's ingredients and traditional cooking methods and describes the eating habits of the feudal lords of the Edo Period. Since the book's publication, restaurants in the prefecture have asked to use the recipes. Therefore, the committee decided to certify each restaurant that prepared historical dishes from the book that met the committee's standards. To receive approval, restaurants need to follow five rules: Include at least one dish from the recipe book, use the ingredients listed in the book, name the set of dishes either "Okayama Korakuen tonosama gozen" or "Okayama Korakuen tonosama no gochiso-cho," present or package the dishes in a way befitting the names and offer the dishes or packed meals on an ongoing basis. These historical meals are available at the ANA Crowne Plaza Okayama and Hotel Granvia Okayama, both located in Kita Ward in Okayama City. Arate Saryo, a restaurant in Kita Ward, and the Okayama Plaza Hotel in Naka Ward will start serving the dishes soon.