Yu Kurosaki HAP40 GEKKO WA OK8M Knife Review

Yu Kurosaki HAP40 GEKKO WA OK8M Knife Review

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Yu Kurosaki is a highly regarded blacksmith in the world of fine Japanese cutlery, known for his innovative designs and exceptional craftsmanship. The Yu Kurosaki HAP40 GEKKO WA OK8M knife is a testament to his skill, offering a unique blend of aesthetic appeal and outstanding performance. This review explores the various features of this exquisite knife, which is designed to meet the high demands of professional chefs and discerning home cooks.

Design and Materials

The Yu Kurosaki HAP40 GEKKO WA OK8M knife features a distinctive design characterized by a mesmerizing pattern on the blade, which is not only visually striking but also functional. The blade is crafted from HAP40 steel, a high-speed powder steel known for its incredible edge retention and resistance to wear. This material ensures that the knife remains sharp through extensive use, even under the demanding conditions of a professional kitchen.

The ‘GEKKO’ (moonlight) pattern etched into the blade is not just decorative; it also helps to reduce food sticking, making slicing smoother and faster. The handle is a traditional Japanese ‘Wa’ style, made from magnolia wood with a buffalo horn ferrule, offering a comfortable and secure grip.


The cutting performance of the Yu Kurosaki HAP40 GEKKO WA OK8M knife is exceptional. Its ultra-hard HAP40 steel core allows for an incredibly sharp and durable edge, making it capable of precise cuts with minimal effort. Whether you are slicing delicate vegetables, filleting fish, or cutting through tough meat, this knife handles each task with ease and precision. The lightweight and well-balanced nature of the knife also ensure that it can be used for extended periods without causing hand fatigue.


Durability is a key strength of this knife, thanks to the use of HAP40 steel. This high-performance material ensures that the blade maintains its sharpness and structural integrity even with heavy use. However, to maximize the lifespan of the knife, proper care is essential. It should be hand washed and dried immediately after use, and periodic sharpening is recommended to maintain the edge.


The Yu Kurosaki HAP40 GEKKO WA OK8M knife is priced at the higher end, reflecting its premium materials, artisanal craftsmanship, and advanced features. For those who appreciate the art of cooking and demand the best tools, the investment in this knife is well worth the cost, given its performance and longevity.


The Yu Kurosaki HAP40 GEKKO WA OK8M knife is a masterpiece of Japanese knife making, blending exceptional functionality with stunning aesthetics. Its superior materials, craftsmanship, and performance make it an ideal choice for professional chefs and culinary enthusiasts who seek the best in their kitchen tools. Investing in this knife means equipping yourself with a tool that will enhance your cooking experience and last for many years to come.

Japanese chef knife