Kikuichi Kurouchi Gyuto

The Kurouchi finish is a rustic, black oxide layer left on the blade after the heat-treating process. Beyond its distinct aesthetic, it provides a layer of protection against oxidation and corrosion, though it does not make the knife rust-proof.

This knife is best suited for a cook who is ready to commit to a specific maintenance routine. Because it is made of high-carbon steel, it will rust if left wet or dirty, so you must wipe it dry immediately after every use.

This knife has a substantial, heavy-duty feel compared to many modern stainless steel knives. The added weight provides excellent momentum and cutting power, which is particularly helpful for breaking down larger vegetables or proteins.

No. Despite its robust appearance, the high-carbon steel edge is thin and optimized for precision cutting. Using it on bone, frozen items, or hard pits can easily chip or damage the blade.

The walnut handle is durable and comfortable, but like all wood handles, it should never be soaked in water or put in the dishwasher. An occasional application of food-safe mineral oil will keep the wood hydrated and prevent it from drying out or cracking over time.

Yes. Because the blade is made from reactive high-carbon steel, it will naturally develop a patina—a grey or blue-black discoloration—as it interacts with acidic foods. This is a normal, desirable process that actually helps protect the steel from deeper rust.