A trademark of Ono's sushi making is his practice of cooking sushi rice during serving hours: three times in one evening
a practice that is practically unheard of in mainstream establishments. This is done in a traditional iron pot over a flame, eschewing automatic, electric alternatives.
Read more: http://www.japanvisitor.com/japanese-culture/food/michelin-guide-japan/sukiyabashi-jiro#ixzz3ugBt7CGu