Gyuto Warikomi Forged By Björn Birgersson


A slimline Gyuto designed to take full advantage of the incredible slicing capabilities of Björn's signature, ultra thin hollow grind. With an incredibly hard 66+ HRC core the edge is not only thin, but also able to be incredibly sharp. Björn has perfected the hardening process to give us an ultra hard and yet incredibly tough edge that will peel through produce like its not even there.
This lovely sharp cutting core is packaged up in a mild steel cladding, which is forged warikomi style. Giving you an incredibly sharp and resilient blade that is very thin, perfectly balanced and a joy to use on almost any task.
We chose this slimline santoku tipped profile to take full advantage of the signature Birgersson Blade features.
Product Specification

Blade Type: Gyuto

Edge Length: 230mm | 250mm

Spine Heel: 3.5mm

Spine Mid: 1.8mm

Spine Tip (20mm before): 0.8mm

Blade Height: 52mm | 54mm

Weight: 183g | 198g

Cutting Edge Steel: High Carbon Steel

Stainless: No

HRC: 66+

Blade Construction: Warikomi

Blade Finish: Brute de Forge

Grind: Hollow

Handle Construction: Hidden Tang

Handle Materials: Bocote

Handedness: Ambidextrous

Saya Included: No

Shipping & Returns


We process orders 5 days a week (Monday - Friday) and ship from our shop in Berlin, Germany. We ship with FedEx, UPS and Deutsche Post.

We are happy to offer free international shipping on a variety of orders depending on location and order value. You can check to see where things sit for you here.


At Modern Cooking we want our customers to be inspired and delighted by the products they purchase through our shop.

However, we understand that you may need to return products occasionally. If you are not entirely happy, you can return your purchase in its original condition within 14 days for a refund. Please email if you wish to return any goods.

In the unlikely event that you receive faulty goods or your order is damaged in transit, please contact us for instructions on how to return the goods as in this case we will meet the cost of return postage, though only if this is arranged through our authorised carriers. Any claim for refund or exchange resulting from faulty goods or goods damaged in transit must be raised within 5 business days.

All Modern Cooking logistics partners provide insurance in case of damage, but the coverage is only valid if we are notified within 5 business days. Please make sure to inspect your order immediately upon receipt to ensure that there is no damage.

Once we have the goods back, we will issue a full refund or send replacements where possible, as you prefer.

Product Care:

Cleaning: Clean by hand with warm water. Avoid wetting the handle when possible. 

Sharpening: We advise using whetstones to sharpen your knives and a honing rod or steel to maintain the burr between sharpening sessions. 

Reactive Steels: Reactive steels like Aogami Super, Apex Ultra or one of the many premium reactive German and Swedish steels are susceptible to rust if not properly cared for. In this case we advise that you keep the knife dry between uses and when storing the knife for longer periods wiping the knife blade with Tsubaki oil or another food safe oil is a wise choice. This will not stop a patina forming on the blade, but it will stop rust. A patina can be a beautiful personal feature on your knife and helps to stop rust forming. So, dry your knife regularly between uses, store in a dry place and apply some Tsubaki oil from time to time when storing for long periods. 

A reference guide to steel types

Handle Care: If you have a knife with a non-stabilised wooden handle, you can apply Tsubaki oil or another food safe oil to your handle from time to time. Food safe wax can be applied to both stabilised and no-stabilised wooden handles. Never apply hot wax or oil as you risk warping or damaging the handle.