Kezuriki

A katsuobushi kezuriki (鰹節削り器; かつおぶしけずりき) is a traditional Japanese kitchen utensil, similar to a wood plane or mandoline.

[1] The technique used to prepare the cooking ingredient is pulling and pushing a block of katsuobushi across the blade in the device in a back-and-forth movement.

[2] Larger, thicker shavings, called kezurikatsuo (削り鰹; けずりかつお), are boiled with kombu to make dashi.

Smaller, thinner shavings, called hanakatsuo (花鰹; はなかつお), are used as a flavoring and as a topping for many Japanese dishes, such as okonomiyaki.

Today, many Japanese households no longer use the katsuobushi kezuriki, opting instead to buy packages of already-shaved hanakatsuo or kezurikikatsuo at supermarkets.