7-Piece Japanese Knife Set - Yellow Sea Series

Yellow Sea Series 7-Piece Japanese Knife Set: The excellence of 67-layer Damascus

Expert verdict at a glance:

• Material: 10CR15CoMoV steel core (60 HRC), San Mai technique with 67 Damascus layers.

• Performance: Long-lasting razor sharpness thanks to the Cobalt-enriched alloy.

• Design: Amber yellow epoxy resin and stabilised wood handles, delivering a solar aesthetic and perfect ergonomics.

• Savings: A price advantage of up to 48% compared to purchasing individually.

Technical Precision in Every Cut: 10CR15CoMoV Steel

The Power of Cobalt and Carbon

The Yellow Sea Series represents Kaitsuko's high-performance range. The core of the blade is forged from 10CR15CoMoV steel, a premium alloy reaching a hardness of 60 HRC. The addition of Cobalt allows it to hold an extremely sharp edge (15° angle) twice as long as standard steel. The 67 Damascus layers protect this hard core while providing the blade with essential mechanical flexibility.

Hammering and Unique Patterns

Each blade is a unique piece of craftsmanship. The folding and forging process creates natural wave patterns on the steel, while precision hammering reduces the contact surface with food, creating a non-stick effect during cutting.

Balance and Surface Science

A blade at 60 HRC is an instrument of surgical precision, but its rigidity makes it vulnerable on unsuitable surfaces.

• The danger of plastic: Hard polymer or glass chopping boards are technical hazards. They cause micro-bounces that instantly dull the edge.

• The End-Grain Advantage: We recommend using an end-grain chopping board. Scientifically, as highlighted by studies from the University of Wisconsin, wood possesses hygroscopic properties that trap and neutralise bacteria, whilst offering a "yielding" surface that cushions the edge of your Damascus knife without dulling it.

7-Piece Set Breakdown: Absolute Versatility

This set has been meticulously curated to provide a technical solution for every culinary challenge:

1. Large Chef's knife (234g): The power tool for large cuts of meat and bulky vegetables.

2. Chef's knife (191g): More manoeuvrable, it is the centrepiece of your kitchen for slicing and preparing daily proteins.

3. Nakiri knife (279g): Its rectangular blade is the Japanese standard for slicing vegetables without crushing them, thereby preserving all flavours.

4. Santoku knife (244g): The master of delicate ingredients. Its geometry limits sticking for clean cuts on delicate fish and vegetables.

5. Bread knife (175g): Serration specifically designed to cut through the hardest crusts without tearing the crumb.

6. Boning knife (125g): Rigid and precise blade to separate meat from bone with minimal loss. Note: designed to work around bone, not to cut through it.

7. Utility knife (217g): The ideal complement for all precision cuts requiring high agility.

Design and Ergonomics: The Yellow Sea Fusion

The handle is the essential point of contact between the cook and the tool. In this series, we use a blend of stabilised wood and epoxy resin:

• Dimensional Stability: The stabilised wood does not warp with moisture, ensuring lifetime durability.

• Perfect Balance: The balance point is engineered to reduce wrist fatigue during prolonged use.

• Natural grip: The ergonomic shape ensures complete control over movements, even for the most intricate cuts.

Rigorous Selection

While the design draws inspiration from Japanese solar aesthetics, performance relies on the thermal mastery of 10CR15CoMoV steel. We selected this alloy for its molecular stability, offering you a hardness of 60 HRC (equivalent to Seki standards) with an optimised performance-to-price ratio.

We enforce strict post-production quality control: the final polish must reveal the 67 layers without any roughness, ensuring the Damascus pattern is not merely decorative, but true evidence of successful multi-layer forging.

Care Guide for a Lasting Investment

A 60 HRC steel is a precision instrument requiring special care:

• Washing: Exclusively by hand with soapy water. Dishwashers are strictly prohibited (risk of micro-cracks on high-hardness steel).

• Drying: Wipe immediately with a soft cloth. Thorough drying protects the lustre of the resin handle.

• Cutting surface: It is imperative to use a wooden chopping board. Glass or marble surfaces will instantly dull the edge of your Damascus knife.

• Cutting technique: Never push food with the sharp edge; always use the spine of the blade.

The 10CR15CoMoV steel of the Yellow Sea Series is harder than most standard steel honing rods on the market.

• To avoid: Using a standard steel rod could scratch your blade or cause chipping (micro-chips) instead of realigning the edge.

• Expert recommendation: For this alloy, maintenance is carried out exclusively with a Japanese water stone. Periodic passes over a 3000 grit (maintenance) then 8000 grit (mirror polish) are essential to maintain the 15° angle and the original gliding feel.

The Kaitsuko Expert Verdict

The Yellow Sea Series is aimed at those who have already mastered flexible steels. It is an uncompromising instrument: the 60 HRC hardness leaves no room for approximation, demanding precise technique to deliver an incomparable glide.

This 7-knife set represents a long-term investment, protected by a blade warranty. By choosing this set (individual value €900), you make a saving of €350, offering unrivalled value for money for forge quality of this level.

Technical Specifications