Bevel Type Analysis
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.
Single vs Double Bevel Cut Mechanics
Petty (Utility Knife)
Peti (ペティ)
Description
Petty is a small Japanese utility knife commonly chosen for trimming, fruit preparation and other precision tasks. Length and edge geometry vary. It can complement a Santoku or Gyuto, but its short blade is less efficient for large ingredients and should not be used to pry or cut hard bones.
Best For
Blade Characteristics
- Generally a double-bevel utility knife with a relatively narrow profile.
- Common blade lengths are approximately 90–150 mm.
- Useful for small-scale trimming and precision work; grip and balance vary.
- Not intended for heavy chopping or twisting the tip.
Choosing steel
Blade shape alone does not determine the best steel. Compare corrosion resistance, sharpening requirements, blade geometry and the individual maker's instructions.
Compare carbon and stainless steel or see our steel-family guide.
Famous Regions
This cutlery type is famously forged and crafted in:
Choose and care for this knife
Blade shape is just one part of the decision. Compare your workspace, sharpening routine, steel preference and the exact maker specifications.
Six Japanese kitchen knife shapes compared
Use these approximate ranges to make a shortlist; the dimensions and grinds of individual models vary. These are not product tests or universal specifications.
On narrow screens, scroll the comparison table horizontally to see all columns.
| Shape | Typical uses | Indicative length | Limits | Bevel and upkeep |
|---|---|---|---|---|
| Santoku | Everyday vegetables, boneless meat and fish | Usually 165–180 mm | Less tip reach than many Gyuto designs; not for bones | Usually double. Model-dependent; check steel and edge |
| Gyuto | Versatile prep, longer slicing strokes | Often 180–240 mm | Long blades need board clearance; not for bones | Usually double. Model-dependent; avoid twisting thin edges |
| Nakiri | Vegetable chopping and slicing | Often 150–180 mm | Limited pointed-tip work; not for bones | Usually double. Avoid hard cutting surfaces |
| Petty | Small produce, trimming and detail work | Often 90–150 mm | Not a substitute for a full-size main knife | Usually double. Protect small tip and edge |
| Deba | Whole-fish preparation with appropriate technique | Often 120–210 mm | Not chip-proof; avoid hard impacts and twisting | Traditional versions: single. Handedness and bevel-specific sharpening |
| Yanagiba | Draw-slicing boneless fish and sashimi | Often 210–330 mm | Not a chopping or bone-cutting knife | Traditional versions: single. Handedness and bevel-specific sharpening |
If you are undecided, usethe buying guide, knife typesandcare.