Yu Kurosaki Kokusen AS Petty 150mm
Tax excluded. Shipping calculated at checkout
Eligible US purchases include 180-day returns and a free prepaid return label.
Free US shipping over $99. Orders are normally fulfilled within 2 business days; UPS Ground transit is typically 1–5 business days. Custom work may add 1–2 business days.
Every order is fully insured. If a package is lost or damaged, contact us and we will handle the claim.
Overview
The Yu Kurosaki Kokusen AS Petty 150mm is a nimble, high-performance Japanese utility knife made for cooks who want precision, edge retention and standout forged character in a practical everyday size. At 150mm, this petty gives you more reach than a smaller paring knife while remaining controlled for detail work, trimming, slicing fruit, preparing herbs, breaking down smaller proteins and quick board tasks where a gyuto may feel too large.
The Kokusen line pairs Aogami Super carbon steel with stainless cladding, providing excellent edge life while reducing some of the maintenance required by fully reactive carbon-steel blades. Yu Kurosaki’s hammered Kokusen finish gives the blade a bold, textured look and helps with food release during prep.
Choose between an octagonal rosewood wa handle with a black pakkawood ferrule or an octagonal ebony wa handle with a buffalo horn ferrule. Both options keep the knife light, balanced and comfortable in a pinch grip.
Because the exposed Aogami Super edge is reactive, wipe the knife dry during use, avoid soaking it and never put it in the dishwasher. A natural patina may form over time. For storage or humid environments, a thin coat of Tsubaki oil can help protect the carbon-steel edge.
Common Questions
Q: What is a 150mm petty knife best used for?
A: A 150mm petty knife is excellent for small-to-medium prep jobs such as slicing shallots, trimming proteins, cutting citrus, preparing garnishes, mincing garlic and working with herbs. It is longer than a paring knife but easier to control than a full-size chef knife.
Q: Is the Yu Kurosaki Kokusen AS Petty good for home cooks?
A: Yes. It is a premium utility knife with excellent sharpness and edge retention, especially useful when you want one smaller knife for a broad range of everyday prep.
Q: How should I maintain the edge?
A: Use a knife-friendly cutting board, wipe the blade dry after use and avoid hard materials such as bone, frozen food and glass boards. Regular stropping on the Tokushu Knife Premium XL Buffalo Strop can help keep the edge crisp between sharpenings.
Specifications
- Brand / Blacksmith: Yu Kurosaki
- Series: Kokusen Ei
- Knife Type: Petty / Utility Knife
- Core Steel: Aogami Super / Blue Super carbon steel
- Cladding: Stainless cladding with hammered Kokusen tsuchime finish
- Nominal Blade Length: 150mm
- Blade Height at Heel: Approximately 33.3mm
- Spine Thickness at Heel: Approximately 1.9mm
- Handle Options: Rosewood with black pakkawood ferrule; ebony with buffalo horn ferrule
- Hardness: Approximately 65 HRC
- Bevel: Double bevel / 50-50 edge
- Country of Origin: Japan
- Care: Carbon-steel edge; hand wash and dry immediately
Measurements may vary slightly because each knife is handmade. Overall length and weight vary by handle selection.
Shipping, returns and order protection
US shipping: Free on orders over $99. Orders are normally fulfilled within 2 business days, and UPS Ground transit is typically 1–5 business days after fulfillment. Custom handle installation or sharpening may add 1–2 business days.
Returns: Eligible purchases may be returned within 180 days with a free prepaid return label. Knives sharpened by Tokushu Knife or fitted with a custom handle remain eligible if they are otherwise new, unused, undamaged, and returned in their original packaging with all included components. The same refund terms apply.
Order protection: Every order is insured. If a package is lost or damaged, contact us at Tony@TokushuKnife.com and we will handle the claim.
Outside the US: Supported international orders from TokushuKnife.com typically ship via FedEx Delivered Duty Paid (DDP). Tokushu Knife pays all applicable import duties and taxes on the customer's behalf. Customers are not responsible for paying duties or taxes. Available destinations, shipping charges and delivery estimates are shown at checkout. Customers may also shop at TokushuKnife.eu for regional inventory and options.
Choose options
Cut Above the Rest
Steel, Construction and Care
Our catalog includes stainless, semi-stainless and carbon steels selected for edge performance and durability. Carbon steels may develop a patina, while stainless steels are designed to resist discoloration. Follow the care guidance on each product page, hand wash only and dry the knife promptly after use.
