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. It is used to shave, dried blocks of skipjack tuna.

The technique used to prepare the cooking ingredient is pulling and pushing a block of across the blade in the device in a back-and-forth movement. The resulting shavings are captured in a wooden drawer at the bottom of the instrument, and retrieved by opening and emptying the shavings that are roughly sorted into two sizes for different uses.

The shavings are a staple of Japanese cuisine. Larger, thicker shavings, called kezurikatsuo (削り鰹; けずりかつお), are boiled with to make. 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.

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