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/ Why Spiral-Grooved Stones in a Melanger Are a Game-Changer for Chocolate Production

Why Spiral-Grooved Stones in a Melanger Are a Game-Changer for Chocolate Production

When it comes to artisan chocolate, every detail matters—quality cocoa beans, precise tempering, humidity control… But what if I told you that something as basic as the grinding stones in your melanger could drastically impact your production process and final product?

They can work faster. More efficiently. Grind finer. And it’s all thanks to spiral grooving.

Let’s dive into why this innovation is a game-changer and why KADZAMA melangers with spiral-grooved stones are the best choice for serious chocolatiers.

How Do Melanger Stones Work, and Why Does It Matter?

A melanger is the heart of any chocolate, nut butter, or paste production. The stones inside it perform three essential functions:

  • Grind ingredients down to 10-20 microns, ensuring a silky-smooth texture.
  • Mix and conche the mass, eliminating unwanted volatile acids and developing rich flavors.
  • Regulate viscosity and flow, allowing for a perfectly refined product.

But here’s the catch: most traditional melangers use circular-grooved stones, and they don’t work as well as you think.

Circular Grooves: Why They Are Outdated

Circular-grooved melanger stones

Most melangers use circular (or straight) grooves, where the grooves on the stones run parallel to their rotation, like rings on a tree.

This method has been around for centuries and was effective enough—until we took a closer look. The major downsides?

  • Limited contact area – the grinding happens in the same spot, leaving some particles under-processed.
  • Poor mass movement – ingredients often stagnate, especially with tricky products like coconut flakes or thick nut pastes.
  • Uneven grind – some chocolate particles end up smaller than 20 microns, while others stay much larger.

Ever noticed that even after 48 hours in a melanger, coconut flakes still feel gritty? That’s the result of circular grooves.

At KADZAMA, we continuously collect real-world feedback from chocolatiers, test our machines in action, and improve them based on real production needs. That’s how we developed the spiral groove system.

How Do Spiral Grooves Work?

Spiral-grooved melanger stones
  • Instead of parallel circular lines, the grooves are cut diagonally in a spiral pattern.
  • The contact area between the stones and the mass increases, allowing for a more even and efficient grind.
  • The mass is pulled under the stones more effectively, speeding up processing and improving texture.

What’s the result?

  • Faster, more effective grinding – particles reach the desired size 30-50% faster than with standard stones.
  • Consistently smooth texture – spiral grooves create a dynamic, evenly distributed grinding process instead of focusing on a single contact point.
  • Optimized mass circulation – ingredients don’t get stuck but keep moving smoothly throughout the melanger.
  • Longer stone lifespan – because pressure is evenly distributed, wear and tear is reduced, allowing stones to last over 5 years, even with 24/7 operation.

Lab Tests: Spiral Grooves vs. Circular Grooves

We conducted real-world tests with two identical melangers—one with standard circular grooves, the other with our patented spiral groove technology.

Test 1: Milk Chocolate

After 24 hours: the chocolate from the spiral-grooved melanger had twice the fineness of the chocolate from the circular-grooved one.


Milk chocolate test results

Test 2: Coconut Paste

After 24 hours: in the circular-grooved melanger, the mass was still gritty. In the spiral-grooved melanger, the coconut had transformed into a perfectly creamy, silky paste.


Coconut paste test results

KADZAMA’s Spiral-Grooved Stones Are Not Just Theory – They Deliver Real Results

  • Superior grinding and conching efficiency
  • Up to 30% faster processing time
  • Guaranteed ultra-smooth texture
  • Stones that last over 5 years, even with 24/7 use

If you take chocolate-making seriously, don’t settle for outdated technology. Choose the melanger that truly works for you.

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