Konosuke YS Gyuto 240mm

Excellent out of the box sharpness coupled with a beautiful kurouchi finish make this a knife that will really stand out in the kitchen both in looks and performance.

A top class workhorse finished to a exceptional standard.

Note: This knife is sold with a Konosuke magnolia saya designed to fit it included in the price.

 

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Product Code: KONO-011-##

First Impressions

This is an absolutely amazing knife, the core steel is semi-stainless at an HRC of 63-64 so has great edge retention.

This does means it will be a bit more brittle than those of a lower HRC but you'll be rewarded for your extra care. Great out of the box sharpness but you could get a screamingly sharp edge with a little touch up.

Beauty


There's no doubt that this one is a stunner, the attention to detail with Konosuke knives is what makes them stand out from others. From the beautiful hammer marks in the kurouchi finish to the beautifully smooth lower blade this will be turning heads. The handle is elegant and the fitting, impeccable.

In Hand


The fit and finish make these knives a joy to use, there's no sharp bits to annoy or rub.

The handle is octagonal and longer than a lot of other knives in other ranges, it's also a kind of oval shape so narrower width wise, this is Konosuke's preferred handle shape and it clearly works. Made from enju wood and a maguro wood bolster.

Durability


This will hold an edge very well with the higher HRC and should sharpen up quite easily, just be careful as the trade off with hardness is brittleness. Keep your technique good and you should be rewarded with a very durable knife.

Ease of Care & Maintenance Tips


The core steel is semi-stainless and it's clad in stainless so ease of care should be a breeze. We have been informed that this core steel has slightly more carbon in it than the GS+ range so there could be a slight patina develops on the exposed edge but nothing major. As usual, no dishwasher and wipe and dry after every use.

Our Verdict


Outstanding quality steel, fit and finish are of typically high Konosuke standard - this is an exceptionally high quality knife all round.

Knife Measurements - Konosuke YS Gyuto 240mm

  • Blade Edge Length: 245mm / 9.65" (Measurement of the cutting edge)
  • Total Knife Length: 405mm / 15.94" (Blade tip to handle end)
  • Blade Height: 50.3mm / 1.98" (Heel to spine)
  • Blade Thickness: 3.3mm / 0.13" (Spine width above the heel)
  • Total Weight: 176 grams / 6.21 oz

Range Specifications

  • Core Steel: GS+ Semi Stainless
  • Cladding Steel: Stainless
  • Hardness: 63-64 (HRC)
  • Handle Style:
  • Handle Material: Octagonal enju wood with maguro wood bolster by Studio Khii
  • Left or Right handed: Suitable for both (Double Bevel)

Our aim is to measure and photograph our products as accurately as possible but due to many items being handmade, finished or using natural materials, there can be minor variance in measurements and finishes.

Some measurements such as HRC are provided by manufacturers and should therefore be used as a guide.

Meet the maker

Konosuke

Konosuke is a renowned knife maker based in Sakai City, Osaka Prefecture, a region with more than six centuries of blade-making history. Founded by the fifth-generation Yamamoto family and led by Kosuke Kawamura, the brand evolved from a long lineage of expert sharpeners serving Japan’s top chefs.

Konosuke is celebrated for its collaborations with distinguished blacksmiths such as Yoshikazu Tanaka and Kenichi Shiraki, producing some of the most sought-after kitchen knives worldwide.

Known for their precise geometry, balance, and elegant finish, Konosuke knives embody the skill and refinement that define Sakai’s knife-making heritage.

View all Konosuke products

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