Hephaistos Interdisciplinary Laboratory

For the kitchen

Japanese kitchen knives are renowned worldwide for their quality, sharpness, and craftsmanship. Broadly, these knives can be categorized into two main types: traditional Japanese knives and Western-influenced knives. Below is a detailed overview of both categories, including various types of knives and their uses.

Traditional Japanese Kitchen Knives

YANAGIBA (柳刃包丁)

Preparing sushi and sashimi.

A long, narrow, single-beveled blade that allows for clean and precise cuts on fish fillets. The length and single bevel minimize damage to the fish, preserving the quality of the fillet.

DEBA (出刃包丁)

Processing fish.

A robust and thick blade capable of cutting through fish bones and meat. The Deba is heavy enough to chop through smaller fish bones while maintaining precision and control.

USUBA (薄刃包丁)

Cutting vegetables.

A wide, thin, single-beveled blade that allows for very precise and thin cuts. Usuba is popular among professional chefs who prepare intricate vegetable dishes.

KIRITSUKE (切り付け包丁)

A versatile knife combining the features of Yanagiba and Usuba.

A long, straight blade with a pointed tip, suitable for both slicing fish fillets and chopping vegetables. Kiritsuke is considered a master’s knife, requiring significant skill to use.

Western-Influenced Japanese Kitchen Knives

GYUTO (牛刀)

General-purpose knife, suitable for cutting meat, fish, and vegetables.

Resembles a Western chef’s knife but is usually lighter and has a thinner blade. Gyuto is Japan’s equivalent of the Western chef’s knife, offering excellent control and versatility.

SANTOKU (三徳包丁)

Three virtues – suitable for cutting meat, fish, and vegetables.

A wide and flat blade with a slightly rounded tip, allowing for various cutting techniques. Santoku is popular among home cooks due to its versatility and ease of use.

PETTY (ペティナイフ)

For smaller foods and detailed work.

A small and lightweight knife, ideal for fruits, vegetables, and small cuts of meat. Petty is excellent for precise and detailed cuts.

BUNKA (文化包丁)

General-purpose knife, suitable for cutting meat, fish, and vegetables.
A triangular-shaped blade with a slightly curved tip. Bunka combines the features of Santoku and Nakiri, offering versatility for various cutting tasks.

NAKIRI (菜切包丁)

Chopping vegetables.

A wide and flat blade, perfect for chopping and slicing vegetables. Nakiri is ideal for vegetarians and vegetable lovers, providing excellent control and precision.

CHUKABOCHO (中華包丁)

Chinese-style knife primarily used for chopping and slicing vegetables, meat, and fish.
A wide and heavy blade resembling a Western butcher’s knife but is thinner and sharper. Chukabocho is highly versatile and suitable for many different cutting tasks.

Differences and Advantages

Traditional Japanese Knives:

Bevel: Single-beveled edge allows for very precise cuts but requires more skill.
Material: High-quality steel that maintains a sharp edge for a long time.
Craftsmanship:** Often handmade, reflecting mastery and history.

Western-Influenced Japanese Knives:

Bevel: Double-beveled edge is more user-friendly and easier to maintain.
Versatility: Suitable for a broader range of foods and cutting techniques.
Combination: Combines the practicality of Western knives with the sharpness and quality of Japanese knives.

How Are Japanese Kitchen Knives Made?

Understanding the creation of Japanese kitchen knives and explaining common terms used in their descriptions requires knowledge of traditional Japanese knife forging methods and materials.

Japanese knives are divided into two main categories—honyaki and kasumi—defined by their forging methods and materials used.

Honyaki (“true-forged”) knives are handmade following traditional Japanese blacksmithing techniques and are made entirely from one material: high-carbon steel (hagane). Hagane is typically either white steel (Shirogami) or blue steel (Aogami), and this type of blade is also known as mono-steel.

The process of making a honyaki knife resembles that of traditional Japanese swords (Katana). Forging a kitchen knife is a lengthy and intricate process starting from a single piece of high-carbon steel, involving multiple heat treatments, hammering, hardening, polishing, and sharpening—all done by hand by skilled Japanese blacksmiths in traditional knife-making cities such as Sakai (Osaka), Seki (Gifu), and Echizen (Fukui).

Because honyaki knives are forged from high-carbon steel, their blades are extremely hard and can be sharpened to exceptionally thin and sharp edges that remain sharp for a long time. However, they are challenging to re-sharpen and can easily chip, crack, or break if not used correctly. Due to the small-scale production and the highly skilled artisans involved, honyaki knives are more expensive and recommended for experienced and professional chefs who can maintain them.

On the other hand, kasumi (“mist”) knives are made by laminating a piece of soft iron (jigane) with a piece of high-carbon steel (hagane) to create a layered blade. After forging, hammering, and shaping, the high-carbon steel (hagane) forms the cutting edge and back, while the soft iron (jigane) forms the blade’s body and spine. The misty appearance of the soft iron blade body contrasting with the polished high-carbon steel gives kasumi its characteristic “mist” look, hence the name. The added soft iron reduces the brittleness of the blade, making kasumi blades more affordable and easier to sharpen than honyaki knives.

Within the kasumi knives category, Hon Kasumi or Hongasumi knives are relatively common but refer to higher-quality kasumi knives. While Hongasumi knives are made similarly to kasumi knives, they are often made from higher-quality materials, with more attention to detail and steps in the forging, hardening, polishing, and finishing process.

Summary

Japanese kitchen knives offer a diverse and high-quality selection for every chef’s needs. Traditional knives like Yanagiba and Deba are specialized for certain tasks and require mastery. Western-influenced knives like Gyuto and Santoku are versatile and easier to use, providing the sharpness and quality of Japanese knives. Bunka and Chukabocho add even more versatility, combining the best features of different knives and offering greater flexibility in the kitchen. When choosing knives, consider your specific needs and preferences to find the best knife that enhances your culinary work and brings out the best in your dishes.