Why are your DIY capsules oil-free? The answer lies in the grind size.

You love your Nespresso Vertuo for that thick, velvety layer of crema on top. But when you start refilling your pods to save money, that beautiful foam sometimes disappears, leaving you with a watery disappointment. What’s the secret?

It’s not magic; it’s science. And it all comes down to one thing: Grind Size.

Core Principle: Centrifugal Extraction vs. Grind Size
Science Explanation: Vertuo Centrifugal Extraction™ Technology Explained. The original capsules rotate at extremely high speeds (up to 7000 rpm). If the coffee grounds are too coarse, the water flow will be too fast, resulting in a weak coffee; if they are too fine, they may clog the filter.

We ran a test so you don't have to. We brewed the same coffee bean using three different grind settings in our Capmesso reusable setup. The results speak for themselves.

We call this "The Grind Size Spectrum":

Too Coarse (Sea Salt): The water creates zero resistance. The coffee pours too fast, resulting in a thin, weak layer of foam that vanishes in seconds.

Too Fine (Powder): The machine struggles. The pour is slow, and the coffee tastes bitter and over-extracted, sometimes even triggering a machine error light.

Just Right (Medium-Fine/Table Salt): The Goldilocks zone. It creates the perfect pressure, resulting in the rich, golden, persistent crema you crave.

Now that you know the theory, let’s put it into practice. To get that perfect Medium-Fine grind, we highly recommend using a quality burr grinder rather than a blade grinder. Consistency is key.

Once you have your perfect grind, follow these crucial steps using your Capmesso Kit:

FAQ:

Q: Why is my coffee machine flashing a red light?
A: Check if the grind is too fine, causing blockage, or if there is residual powder on the edge of the capsule affecting barcode reading.

Q: Why is there grounds in my coffee?
A: This means the grind is too fine. Adjust it to a slightly coarser grind.

Ready to start your crema experiment? [Grab your Capmesso Refill Kit here] and save 80% on every cup!