Jelle Hazenberg

West Clare, Ireland · High Performance, Handcrafted Kitchen Knives

Jelle Hazenberg

Hazenberg Knives

Jelle Hazenberg produces highly refined kitchen knives from the Atlantic coast of Ireland, drawing on his background in professional kitchens to shape every aspect of the work. His knives are defined by refined convex geometry, controlled tapering, and an understated aesthetic that reveals itself fully through use rather than display. The collection reflects a disciplined maker focused on comfort, cutting feel, and long-term ownership rather than visual noise.

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The latest from Hazenberg Knives

Recent work

Recent releases from this workshop. Each made by hand in extremely limited numbers.

About the maker

On the workshop

Jelle Hazenberg is a Dutch bladesmith working from the windswept coastline of West Clare on the Atlantic edge of Ireland, a landscape whose quiet restraint and rugged clarity is mirrored in his knives. His background in professional kitchens runs underneath everything he makes: he knows what a long shift demands of a blade, and that knowledge shapes the way he approaches the forge. Each knife begins there, with high-performance carbon steels brought through tightly controlled heat treatment, before geometry, balance and feel are tuned for real working conditions rather than display.

The Hazenberg design language is defined by refined convexity, purposeful tapering and a cutting experience that holds power and agility in balance. Bevels are cleanly resolved, edges are stable and confident on the board, and the overall geometry rewards long prep with comfort rather than fatigue. Handles are equally intentional: sculpted by hand, often in dark, organic woods that respond well to use and complement the subtle textures of his blades. Nothing is added for effect. The work avoids excess in every direction, leaning instead into clarity of design and meticulous execution.

What distinguishes Hazenberg's craft is a quiet, disciplined pursuit of improvement. His knives reveal their luxury slowly, in daily use, through the way they handle and the way they age. The style is instantly recognisable once you have seen it: contemporary, honest, grounded in performance, and resolved with the kind of restraint that only comes from sustained focus. For Modern Cooking, Hazenberg is one of the clearest expressions of our values, a maker whose tools feel as considered as they look, and whose work consistently delivers the understated, performance-led beauty we look for.

Steel preference

Signature construction

Cutting edge steel

Apex Ultra

Low-alloy fine-grain carbon tool steel

Typical HRC
64–68
Corrosion class
Carbon
Production
Conventional
Origin
Austria (ApexUltra project — developed by Larrin Thomas, Marco Guldimann and Tobias Hangler; FFG-funded, associated with Messerschmiede Hangler)

Apex Ultra is one of the most carefully engineered non-stainless kitchen knife steels in modern circulation — a steel designed from the ground up specifically for handmade knives, rather than borrowed from another industry. It was developed by metallurgist Larrin Thomas together with smiths Marco Guldimann and Tobias Hangler. It is a low-alloy carbon steel — roughly 1.25 percent carbon, 2.6 percent tungsten, 1.5 percent chromium and a 0.4 percent vanadium addition, with manganese and silicon kept low. That composition is tuned for high purity and a fine, evenly distributed mix of chromium-enriched iron carbides, tungsten carbides and vanadium carbides — the structure that lets it hold a very hard edge without the coarse carbides or plate martensite that sap toughness in other high-hardness carbon steels.

What this means for a cook is unusual permission. Apex Ultra carries very high toughness in the 66+ HRC range — the highest of any knife steel its developers have tested at that hardness — so you can ask a maker to grind it thin and run the heat treatment hard, and the edge will hold far longer than the carbon steels smiths usually forge, without microchipping. It forges and forge-welds much like 52100 or 1.2562, sharpens cleanly on natural and synthetic stones without needing diamond plates, and its modest chromium slows patina a little — though it is not stainless and should be cared for as a carbon steel.

Apex Ultra has become a signature steel of the European maker community, and the Modern Cooking catalogue carries an unusually deep bench of smiths working in it. Tobias Hangler himself heads that group, alongside Marco Guldimann, Benjamin Kamon, Martin Huber, Jonas Johnsson, Karol Karyś, Birch & Bevel, and MCx. It is genuinely a step forward — one of the relatively few cases where the marketing claims and the underlying metallurgical data are saying the same thing.

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Blade construction

Laminated Steel

A category covering knives built from multiple layers of different steels forge-welded together. The hard cutting steel is sandwiched between softer outer layers (cladding) that protect the core, add toughness, and often contribute visual contrast.

The most common laminated constructions in the Modern Cooking catalogue are:

SanMai (三枚) — three layers: hard cutting steel in the centre, softer cladding on both sides. The traditional and most common form.

GoMai (五枚) — five layers: a hard core, two intermediate layers, and two outer layers. Adds visual depth and structural complexity.

KuMai (九枚) — nine layers: similar logic, with more cladding layers for additional pattern and structural variation.

GoMai and KuMai are often chosen not only for the additional layers and visual depth, but also because the intermediate layers can act as a nickel diffusion barrier — limiting carbon migration out of the core into the cladding during forge welding, and protecting the core's intended carbon content through the heat of the forging process.

In all cases the cutting performance is determined by the core steel; the outer layers are cosmetic and structural. The lamination contributes corrosion protection (when a stainless jacket clads a carbon core), reduced reactivity, and the visible boundary between core and cladding that gives the knife its character.

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Limited release

Reserve your place

Jelle Hazenberg's work is highly sought-after for its distinctive combination of craftsmanship, performance, and design, with each piece produced by hand in extremely limited numbers — a pace of production that naturally cannot keep up with demand.

For those hoping to secure a piece through Modern Cooking, joining the waitlist is the best way to register your interest in Jelle's work and share your preferred dimensions, design preferences, and intended use. As opportunities become available, we use this information to guide future allocations with care and consideration.

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