At Sukiyabashi Jirō, the Tokyo sushi restaurant of Ono Jirō, an apprentice trains for about ten years before being allowed to make the tamagoyaki, the sweet rolled omelet.
The apprentice Nakazawa Daisuke, who appears in the documentary Jiro Dreams of Sushi, has said in interviews that he made it about 200 times before Jirō accepted one. In the film, he says he cried when Jirō finally said it was good.