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  1. Masashi Kobo Usuba

Masashi Kobo Usuba
Japanese Vegetable Knife

More Information

Hand forged professional knife from Masashi, with single bevelled White Paper Shirogami steel hand laminated to a softer steel cladding. Usuba are used in Japan for traditional vegetable prep, and the single bevelled edge gives great control (with skill, needless to say) for the uber-thin katsuramuki technique. Compared to a Nakiri (which is more of a household knife) the Usuba cuts with more detail and control, but needs more skill. Masashi makes these in the kamagata style, popular in the Kansai area - the Kyoto chefs use the pointed end for fine detailed work.

Masashi trained under his uncle, Yoshida san, of Yoshikane, and now produces extraordinarily beautiful kinfes in his workshop in Sanjo, Niigata.


    Single bevelled blades take a bit of getting used - like driving on the other side of the road!

    More about Masashi


    Masashi Yamamoto trained under his uncle, Yoshida san at Yoshikane, and produces knives of stunning quality - primarily in his signature SLD steel, a hard wearing, very-nearly-stainless-steel. In 2018 Masashi moved his forge to a new factory in Sanjo (in Niigata Prefecture) and now has two apprentices working with him.

    We think he looks a little like Christopher Walken, and he claims to be a children’s ski instructor - something we don’t doubt.








    USD / Delivering to United States

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    Masashi Kobo Usuba
    • 200g
    • Shirogami White Paper steel
    • Magnolia handles
    • Made in Japan
    • In Stock - Available to dispatch worldwide, contact us for showroom stock availability

    UK: (excluding Tripod Ladders)

    • Free delivery for orders over £100*
    • £4.00: 48 Tracked with Royal Mail - delivered by the postie, can be left in safe place, limited tracking info. Approx 2-4 working days.
    • £7.50: FedEx Tracked service delivered next working day for orders received before 1pm GMT Mon–Fri (ex Bank Holidays).

    *Surcharges may apply to some larger or heavier items to some areas.

    Global: (excluding Tripod Ladders)

    • Free delivery for orders over £/$/€100*
    • Price depends on location - adjust the COUNTRY tab in your basket to see the price.
    • We use DHL or FedEx, and we’ll email you the tracking info.

    *Surcharges may apply to some larger or heavier items to some areas.

    Please note Niwaki are not responsible for any import duty, taxes or fees incurred and these will be will be collected by our courier during customs clearance — For EU countries, when possible DHL will provide an estimate on the order confirmation page.

    Knife Care

    Handle Japanese knives carefully - the steel is brittle. Don’t cut bones, don’t use on hard surfaces, don’t chuck them about and don’t put them in the dishwasher. Handle them like you handle your wine glasses and you’ll be fine.

    • Hand wash
    • Avoid soaking - especially the traditional style knives, as it expands the wooden handles
    • Dry thoroughly
    • Store individually
    • Wipe over with Camellia Oil if not using regularly
    • Sharpen every two weeks or so of regular use
    • Use the Niwaki Combination Stone for everyday sharpening
    Masashi Kobo Usuba