The KI Series is Masamoto’s range of high-grade Shiro-ko #1 (White Steel No.1) Hon Kasumi Japanese traditional-style knife. When compared with the Kasumi knife-making process, the production of Hon Kasumi knife requires several extra steps be carried out during the forging, quenching, sharpening and finishing stages of production and requires a higher level of craftsmanship. Unlike the KK Series, the KS Series is completely hand sharpened, polished and finished by especially skilled and experienced craftsmen, which results in extra edge sharpness and a more refined level of finish.
Masamoto KS Series knife uses a blade core of Hitachi White Steel No.1 (HRc. 62-63), which is forge-welded with soft iron. White Steel No.1 is very pure and is capable of achieving a high hardness level without being overly brittle, so it can be used to create very sharp edges with good edge retention that are also easy to sharpen. It is perfect for professional users who like to keep their knives extra sharp.
Each knife is fitted with a traditional Japanese ‘D-shaped’ magnolia wood handle with a water buffalo horn ferrule / collar and also includes a matching magnolia wood Saya (Sheath) for safekeeping.
Yanagiba knives are primarily used to slice boneless fish fillets for Sashimi and Sushi dishes, but they can also be used to fillet small to medium-sized fish and are often used for skinning fish. The narrow blade and relatively acute edge angle of the Yanagiba are features which greatly reduce the effort required to cut through ingredients. As with the Sujihiki, the long blade allows the fish to be cut in one single drawing motion, from heel to tip.
The combination of cutting technique, acute blade angle, and sharp edge result in very little cellular damage in the cut surface. This is particularly important for dishes where the fish is eaten raw, because it helps to preserve the original flavor and texture of the fish.
Notice about White and Marble Colored Water Buffalo Horn Ferrules for Masamoto Knives:
For several years, Masamoto and most other Japanese knife makers have unfortunately been struggling to source Wa handles with White or Marble colored Water Buffalo Horn Ferrules, which are becoming very scarce.
Under these difficult circumstances, both we and Masamoto have done our best to satisfy customers who have requested knives with White Ferrules or Marble colored Ferrules. However, to cover increased costs, Masamoto will now require an extra US$13 when you request a knife with either a White or a Marble colored Ferrule. Please note that even if you request a Marble colored Ferrule, there is still a possibility that Masamoto will only be able to supply your knife with a White Ferrule. Similarly, even if you request a White Ferrule, Masamoto might only be able to supply your knife with a Marble colored Ferrule.
Although White and Marble colored Ferrules have an appealing, distinctive appearance, we actually recommend the simple, stylish solid Black Horn Ferrules because many years of expert experience (Including numerous Wa Handle Craftsmen, professional Japanese Food Chefs and Experienced Knife Users) suggests that Black Horn Ferrules are stronger and more durable than White or Marble colored Horn Ferrules.
If you order a Masamoto knife with a White or Marble colored Horn Ferrule and Masamoto cannot fulfil your request, we will inform you by Email and ask if you are willing to accept a Black colored Water Buffalo Horn Ferrule instead. We apologize for this inconvenience, however, no matter the color of the ferrule, we are confident that you will enjoy your Masamoto knife.
Knife Model: Masamoto KI Series Yanagiba
Blade Material: White Steel No.1
Rockwell Hardness (HRc): 62 to 63
Blade Grind and Edge Shape: Single Bevel Edge
Handle Material: D Shaped Magnolia Wooden Handle with Water Buffalo Horn Ferrule
Saya Included: Yes.
Yanagiba 270mm (10.6")
Total Length: 420mm
Blade Thickness: 4.2mm
Blade Width: 33mm
Total Weight: 170g
Yanagiba 300mm (11.8')
Total Length: 460mm
Blade Thickness: 4.7mm
Blade Width: 36mm
Total Weight: 230g
Yanagiba 330mm (12.9")
Total Length: 490mm
Blade Thickness: 4.8mm
Blade Width: 37mm
Total Weight: 260g
Japanese Traditional Style “Wa-Bocho” knives generally come with Single bevel edge for right-handed use (the opposite side of blade is ground flat with slightly concaved shape). The reverse grinding left-handed version is also available at 50% extra of regular price. (Sorry for much extra! Due to a small demand for the left-handed version in Japan, it is costly to run a special small production from the beginning step and production is very very limited.)
If the left-handed version knife is being out of stock in Masamoto inventory, it often requires very long delivery time. Please contact us first for the availability at email.
We believe the quality and cutting performance of Japanese knives are the best in the world, and hope you enjoy the fine craftsmanship and their sharp edge of your new knife. With proper cares, every Japanese knife should be your special cooking partner for a long time.
This is the Carbon steel blade kitchen knife that can get rust and discolor easily, and requires extra care and attention to prevent rust.
I’m using every day this knife for sushi and sashimi. Very sharp and easy retention edge. Koki always customers cars verygood!!
The knife is very nice. The photo is attached. that is a sable fish I filleted with the Masamoto Yanagi. It was just like cutting butter.
The fish was enjoying the knife too
It's a great feeling to use a well crafted tool. There is a certain feeling of respect, and appreciation for for having one of the best tools in the world in your hands. After using it, the knife continues to decorate the house as a piece of art. It is such a zen feeling of happiness that I have every time I walk or look to the kitchen.