S1, E4: Yuji Haraguchi is a butcher and owner of the fish market Osakana. In this episode of Handcrafted, Haraguchi shows Bon Appétit how to butcher a whole tuna and explains every cut of fish you would see at sushi restaurants. To do this, Haraguchi uses five knives: the Yanagi, the Mioroshi Deba, the Deba single-edged knife, the Gyuto versatile multipurpose chef's knife, and the Yo-Deba.