Katana to Kitchen

Bevel Type Analysis

RyobaOuter IronOuter IronCenter Steel Edge

Double Bevel (Ryoba)

Double-bevel (Ryoba) blades are ground symmetrically on both sides. This splits the cutting force evenly, making them intuitive, easy to guide straight down, and highly versatile for home cooks cutting meats, veggies, and general ingredients.

Cutting Mechanics

Single vs Double Bevel Cut Mechanics

Single-Bevel (Kataba)Ingredient (Fish / Daikon)Straight CutPushes Slice Away✓ Clean slices without crushing delicate fibersDouble-Bevel (Ryoba)Ingredient (Meat / Vegetables)Equal Splitting Force✓ Intuitive straight cuts, easy for all home cooks
knife

Santoku (All-Purpose)

Santoku

Description

The word 'Santoku' translates to 'Three Virtues' or 'Three Uses', referencing its proficiency at slicing, dicing, and mincing. It was designed in Japan during the mid-20th century as a fusion of the traditional Nakiri (vegetable knife) and the Western Gyuto (chef's knife), creating the ultimate all-purpose household kitchen knife.

Best For

✓ Vegetables
✓ Fish
✓ Boneless Meat

Blade Characteristics

  • Typically double-bevel (Ryoba) with an angle of 12-15 degrees.
  • Features a flatter edge profile compared to Gyuto, optimal for vertical chopping.
  • Blade length usually ranges from 160mm to 180mm.
  • Slightly curved spine down to the tip (sometimes called 'sheep's foot' nose).

Steel Recommendations

For this type of blade, professional makers typically suggest: VG-10, SG2 (Powdered High Speed Steel), or AUS-10 stainless steel for excellent corrosion resistance and robust daily use without chipping.

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Knife Anatomy

Parts of a Traditional Japanese Knife

Tip (Kissaki)Fine slicing & piercingSpine (Mune)Back ridge of the bladeRidge Line (Shinogi)Cutting Edge (Ha)Primary sharp slicing edgeHeel (Ago)Eye coring & heavy prepNeck / Gap (Machi)Handle-to-blade clearanceCollar (Kakumaki)Buffalo horn / collar bandHandle (E) & TangMagnolia wood + inserted tang