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Toshu Giken - Kurouchi Nakiri SK Hagane with magnolia and plastic handle (15cm/16.5cm)

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About Toshu Giken (Tokyo)

Originated in 1946, Toshu Kitchen Knife Shop has served a number of professionals with their unique knife-making methods such as "hammered flame forging" and "Edo-Togi grinding". Although the brand is not widely known worldwide, the second generation master, Mr.Tozaki has inherited the rare technique of knife sharpening, which is highly sophisticated and elaborately applied on each piece of his work.  

Most notably, all Toshu knives are 100% hand sharpened by Mr. Tozaki while the majority of knife makers rely on more economical processes. This hand sharpened edge line shows slight imperfection in terms of the appearance but bears unparalleled sharpness. 


About hammered flame forging

Hammered flame forging is one of Toshu knives' specialties, the traditional forging method used for Japanese sword manufacturing. This method is performed by heating the raw material in a 1,000℃ flame and welding/shaping all with manual hammering process.  


About Kurouchi Knives

Kurouchi(黒打)is a type of knives that are only polished the edge line and left with black residue appearing after forging and quenching. The black part of every Kurouchi looks different to each other and shows a little imperfection in their looks. However, this rustic design is aesthetically pleasing to eyes and feels traditional craftsmanship. 


Blade: SK Hagane (standard carbon steel)

・Standard Japanese SK Steel (prone to rust material)

Sharpness ★★ (3/5)

Hardness/durability ★★☆ (3/5)

Edge retention  ★★★☆☆ (3/5)

Ease of sharpening ★★★★☆ (4/5)

Rust resistance ★★☆☆☆ (2/5)

Made of iron sand using Japan's ancient manufacturing method, it is a material that has been used for Japanese chef knives since ancient times. These days it is also commonly used in homes. Because our Japanese carbon steel is honbazuke honed, the blade is very sharp. It is an excellent item with which to enjoy the same sharpness as a professional. 

Type of Carbon Steel HRC reference (the higher, the better in sharpness, edge retention and longer lifetime) Price reference for general chef's knife 21cm
Blue Steel Super 61-65 $$$$$ ($800-1500)
Blue Steel 1 and 2 61-64 $$$$ ($500-1200)
White Steel 1 and 2 61-64 $$$ ($300-800)
Standard Japanese SK Steel 58-60 $$ ($100-200)


Kaz's Knife "No worries, Minor-Issue Warranty"

Having been used for a while, even good knives can get chipped and rusty as seen in the above video, but don't worry! 

Most of the minor issues can be fixed by sharpening on a #400-#1000 whetstone. We have tutorial videos for you to learn how to use whetstone. However, it might seem a bit hard work to get it done by yourself.

Kaz's knife is offering "Minor-issue warranty" which covers small chips and rust on the knives you purchased from us. You can always contact us when you feel your knife became dull, chipped, rusty, etc. We fix those minor issues and send the sharpened knife back to you, mostly for free of charge! (depending on how much work is required, also you bear the postage for sending the knife to us)

(*) Please be advised, we do not warrant major issues caused by misuses such as dropped, cutting bones or frozen food, putting too much force into hard materials, etc.


About delivery

We ship products from Melbourne with Australia Post. Delivery for stocked items takes 1-4 business days depending on your location. Please allow extra 2-3 business days for an international delivery.

Free shipping applies above $250 orders.


Three merits to have good, quality kitchen knives

1. Better sharpness

Improving the cut quality of the kitchen knife, we can promise that "your cooking will be more delicious", "your cooking time will be reduced", and "cooking will be more fun".

2. It is easy to re-sharpen

Since quality kitchen knives do not have distortion, sharpening will become easier. Just as important as the cut quality of a kitchen knife is that it is easy to sharpen. 

3. It retains its sharpness for longer

If you use quality kitchen knives, you can extend the intervals between when you need to re-sharpen.


Message from Kaz and Harry

"Good knife will change your life"

The best shortcut to improving your cooking is to change to a good sharp kitchen knife.

If the knife cuts well, the ingredients will taste delicious. And a delicious dish puts a smile on the face of the people who eat it. 

We want you to make life itself more fun by changing your kitchen knife. Let us guide you to choose the good knife to change your life.