The deba is a thick, heavy Japanese fish butchering knife used for filleting whole fish and cutting through small bones and cartilage. Its thick spine and single-bevel grind balance delicate slicing ability with the weight needed to split fish heads and backbone.
Use cases
- Breaking down whole fish into fillets: the deba does the entire job
- Separating fish heads: drive the heel of the blade through the neck joint
- Portioning raw chicken: the spine absorbs impact when rocking through joints
Not a cleaver
Deba is not designed to cut through hard beef or pork bones. The thick spine handles fish backbone and cartilage; heavy butchering requires a Chinese cleaver or a Western-style boning knife.