Kavamalė Comandante - C40 MK4 Lab Series Hammerhead Hand Grinder - Stone Washed

Begin with the burr

Burrs are usually treated as commodity items — functional and standardized. Hidden inside the grinder, they are rarely appreciated and even more rarely questioned. But what if burr geometry holds the key to unlocking hidden flavor potential — something that roast curves or brew methods cannot fully reveal?

For over a decade, Comandante® founder Bernd Braune has been developing innovative concepts for conical burr sets. At the Bavarian Burr Lab, engineers push the boundaries of machining technology and design pioneering tooling to bring these ideas to life.

The Lab Series gives you greater freedom to experiment and explore flavor possibilities. Global brewing styles and taste preferences are subjective and — just like coffee itself — wonderfully diverse. Embrace this diversity, boldly explore what tastes best to you, and enjoy not only the result, but also the journey that leads you there.

Hammerhead® Burr

"A completely new burr geometry for just one type of coffee? Sounds a little crazy.

It all started with a tiny lot of Yellow Pacamara beans from my old friend Erwin. They had a rare, uniquely vibrant taste – dense, floral, juicy, velvety complex – but only if you hit the grind just right.

So I asked myself: What if there were a burr geometry tailored specifically to unlock the full character of these exceptional beans?

A wild idea? Absolutely. But when you’ve got a fully equipped burr lab and CNC machine, and the freedom to explore, you just do it. Because you can.

What emerged was Hammerhead®: a burr forged with a distinctive Hexagonal Block Blade geometry, inspired by the iconic shape of the hammerhead shark. It’s engineered to handle the size and density of larger beans like Pacamara with remarkable precision, elevating their full-bodied sweetness and fruitforward complexity.

Ohhh, I love Yellow Pacamara. And I love my Hammerhead® burr.

Over the years I kept refining it – tweaking geometry, teeth, and angles – until it performed beautifully across a wide range of coffee types.

Today, this funky-looking thing is a versatile, high-performance burr that delivers outstanding grind quality – whether you’re brewing a chunky Pacamara, a petite heirloom, or anything in between. It embodies the precision and performance that define Comandante®.

What began as something personal and experimental became too good to keep to myself. If you love it dense and juicy, with defined fruit clarity and structured sweetness, Hammerhead® might just be the perfect match.”

– Bernd Braune, Founder

Nitro Rex® – steel like no other

Nitro Rex® is more than stainless steel — it is an achievement of material engineering and craftsmanship. It contains over 17% chromium and precisely balanced amounts of vanadium, molybdenum, and other valuable micro-alloys, giving it outstanding corrosion resistance, hardness, and wear resistance. Its complex remelting process creates a fine, homogeneous structure and a silver-white surface that is not only aesthetically striking but also eliminates the need for coatings. Nitro Rex® stays exactly as it is made: robust, durable, and completely flavor-neutral — allowing coffee to retain its full character.

Nitro Rex® forms the heart of the grinders. It ensures consistent precision and durability, appreciated worldwide — whether grinding ultra-fine espresso or coarse filter coffee. Every COMANDANTE grinder is created for people who refuse to compromise and who share a passion for quality, craftsmanship, and perfect coffee.

QTP® – high-performance techno-polymer

Not all plastics are the same. At Comandante®, advanced materials are chosen with purpose. QTP® is a high-performance techno-polymer — a long-chain polymer matrix reinforced with quartz nanoparticles. It looks and feels like ceramic, yet offers the strength of a super-composite. Designed for durability and precision, it is also food-safe and water-resistant. Quietly cutting-edge, built to perform.

Scope of Delivery

C40 LAB SERIES TIGERSHARK® Stone Washed

1 × Crank with black-lacquered oak knob*

1 × Transparent polymer Bean Jar

1 × Dark glass Bean Jar with lid**

1 × Comandante® wristband, small

1 × Merino wool felt mat

* Due to the use of natural materials, colors may vary from those shown in the photos.

** Each C40 Mk4 includes two “Bean Jar” containers: one brown glass jar and one transparent polymer-glass jar. Both are food-safe, flavor-neutral, easy to clean with hot water, and each holds up to 40 grams of coffee beans.