There are several exceptions to usual Iron Chef rules.
1) Chefs were allowed to prepare rice before the battle. The challenger used "Koshi-hikari" rice (domestic) in a ration of 80 new to 20 old. While the Iron Chef used California rice in a ration of 50 akita-komachi to 50 koshi-hikari.
2) Chefs are allowed to remake their sushi before serving the tasting panel.
While the main theme is sushi, the chairman has five secret ingredients for the chefs: 20kg of tuna, 40 conger eels, 50 strips of dried gourd shavings, 80 eggs, and 30 gizzard shad (fish).
The Fine Living Network's alternative production number for this episode is FLIRN-160.
Makiko Nakazawa Challenger's Wife
Chinatsu & Sho Challenger's Children