The Tsunehisa Sujihiki Kuro-uchi Rosewood 270mm knife is a masterpiece that boasts a razor-sharp and ultra-thin blade, perfectly suited for slicing meats and fish with precision. Its blade is crafted with a core of Aogami Super steel, known for its exceptional quality among traditional Japanese steels. Slicing becomes effortless with this knife, as the Aogami Super steel ensures efficient and precise cuts, guaranteeing that your ingredients are prepared to perfection.

BLADE SHAPE:

Sujihiki is a knife that is ideal for cutting cooked or raw meat and fish, as the extra-long and thin blade allows the cut to be made in one long, continuous stroke. This avoids the knife moving back and forth (the “sawing” motion) and results in an even and smooth cut of meat.

STEEL:

The centerpiece of this knife is Hitachi's Super Blue Steel (Aogami Super), which is the very top quality of traditional Japanese steels. This knife was heat-treated to around 63 HRC.
Aogami Super is a very hard steel, meaning that it will retain a super-fine sharpness for a long time. In addition, due to the high carbon content (1.4-1.5%), the knife is very easy to sharpen. Among the high carbon steels, Aogami Super is also the least sensitive to rust. It also contains 0.4% vanadium as an admixture for micronized metal grains, which gives the steel more toughness. Aogami Super is rated as the most advanced carbon steel.

LAMINATION:

The outer layers are of softer, stainless steel, giving the knife extra rust protection.

BLADE FINISH:

Kuro-uchi finish, the unprocessed (black) part on the top side of the blade has already developed a dark patina, which protects the blade and gives it a unique and rustic appearance. The blade was treated with hammer blows, resulting in a textured tsuchime look, which gives it a beautiful finish and also prevents food from sticking to the blade.

HANDLE:

The handle (traditional Japanese Wa) is oval and smooth, with no discernible transition between the rosewood handle and maple wood ferrule. It’s suitable for both left- and right-handed users.

BLACKSMITH:

Tsunehisa is a brand that combines a variety of high quality knives from different knife centers in Japan such as Tosa, Seki and Sakai. Their philosophy is that each region has its own steel and different manufacturing processes. For example, Tosa is known for its Ginsanko and Aus-8 steels, Seki is famous for producing excellent blades from the V-Gold steel group, and Sakai for its single-edged Honyaki knives.