Japanese sushi restaurant chain Choushimaru Co. recently won a Guinness World Records title for the largest simultaneous tuna filleting performance, conducted at 71 locations in and near Tokyo.Having sourced bluefin tuna weighing about 40 kilograms from Nagasaki Prefecture for the event, chefs at each restaurant began cutting into giant fish from around 11:30 a.m. on Nov. 1, which is promoted as "sushi day" in Japan.All venues, which involved outlets in Tokyo, Saitama, Chiba and Kanagawa prefectures, were connected via video conference and followed the same show format.Choushimaru, which op…READ FULL ARTICLE