"We're dealing with a cooking manga and cooking anime, and if we can't make the food look good, it doesn't matter how much work we put into the characters," one of the series' producers says. "We would have failed."
Food Wars takes place at the elite culinary high school Tōtsuki Academy, where young chefs challenge each others' cooking skills in often high-stakes head-to-head battles called shokugeki. Though Food Wars is most reminiscent of a sports anime in form and style, the focus has always been on extravagant, clever dishes and dramatic, Michelin restaurant-caliber preparation techniques. For the series' producers, the opportunity to gain hands-on experience with the food they're animating is invaluable; in the clip from the documentary, they discuss observing a tuna filleting demonstration at a nearby supermarket, allowing them to gain a better understanding of the fish and the careful process of dismantling one.
That knowledge was directly applied to a sequence in the second episode of Season 4, which has two rival students -- Saito Somei and Mimasaka Subaru -- duking it out over tuna. While the animation skims over some of the finer points of the process, the resulting cuts of tuna and its texture measure up to the real-life standard.