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.
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.
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.
・White Steel No.1 - High Grade Carbon Steel
Sharpness ★★★★★ (5/5)
Hardness/durability ★★★★☆ (4/5)
Edge retention ★★★★☆ (4/5)
Ease of sharpening ★★★★☆ (4/5)
Rust resistance ★★★☆☆ (3/5)
Manufactured by Hitachi Metals,Ltd. Contains Carbon 1.3%, Manganese 0.25%, Rockwell Hardness 61-64 HRC. Very hard material made from fine particle pure carbon.
White steel (also known as “Shirogami”) is used for cutlery products that can be sharpened to an excellent edge with good quality natural stones. It is a carbon steel with only very small amounts of the impurities.
It has a very narrow range of temperatures for hardening (Yakiire and quenching), and thus requires the blacksmith to be very skilled.
The only downside of White-2 steel is that it’s not rust resistant as it contains high amount of carbon so that it requires users a good maintenance practice.
|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
|Blue Steel 1 and 2
|White Steel 1 and 2
|Standard Japanese SK Steel
The cutting quality and its durability changes greatly depending on differences in the steel. The prerequisites of a good kitchen knife are sharpness and that it retains its edge for a long time.
Also, while the professional Japanese chef sharpens it every day, the sharpening time varies depending on the different steel (different series). If you can save 5 minutes a day, in a month (20 days) you can save 100 minutes, or 1,200 minutes a year, which gives you almost a whole extra day.
With a sharp knife, your food will taste more delicious too! Purchase a kitchen knife from a higher-grade series, and it will make a considerable difference to the taste of your cooking and the length of your preparation time.
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.
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.
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".
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.
If you use quality kitchen knives, you can extend the intervals between when you need to re-sharpen.
"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.