In late April 2019, there was an Iron Chef collaboration with the long-running NHK show Today’s Menu (きょうの料理) to celebrate the end of the Heisei Era when Emperor Akihito (son of Hirohito) abdicated the Chrysanthemum Throne and was succeeded by Crown Prince Naruhito.
It featured Sakai, Michiba, Chen and even Kenji Fukui in a collaboration that would normally be unthinkable since Fuji TV and NHK are competitors, which goes to show how big an occasion the end of a emperor’s era is in Japan.
All three Iron Chefs participated in one of the show’s long-running segments, “Dinner in 20 Minutes”, which was actually conceived by Katsuyo Kobayashi, the chef who bested Chen in Battle Potato I (232).
Today’s Menu has been airing since November 4th, 1957 and its list of guests includes Chen Kenmin and a younger Michiba, as NHK Archives on Facebook posted: