Pour yourself a cup for this one: If you’re chasing a cleaner cup from your Moka pot, adding a paper filter might be the wrong move. A Reddit user’s experiment—brewing eight cups in one morning with varying grind sizes—reveals a stark truth: paper filters strip flavor, amplify acidity, and leave you with a cup that feels like a compromise. The setup? A Bialetti 2-cup Porlex mini II grinder, set to 750μm for coarse grinds, paired with dark roasts that dominate their palate. The goal? To test whether a paper filter could elevate the Moka pot’s output. The result? A bitter, acidic mess that left even the most forgiving palates unimpressed.
The filter’s impact is clear. In every brew, it siphoned away oils that carry the coffee’s depth, leaving behind a thin, sour profile. The user’s mid-dark Peru, which should deliver nutty undertones, only revealed those notes at 650μm—coarse enough to avoid over-extraction. But even then, the filter muted the roast’s richness, turning it into a shadow of itself. The Ethiopia natural mid roast fared worse: its fruity character vanished entirely, replaced by an unpleasant acidity that clung to the finish. The filter didn’t just remove sediment—it rewrote the coffee’s flavor story.
So what’s the fix? The user’s workaround? A metal filter to catch particles without sacrificing nuance. But the real takeaway? Paper filters in Moka pots aren’t a shortcut—they’re a straightjacket. The Moka pot’s strength lies in its ability to extract bold, full-bodied flavors, and a paper filter undermines that by stripping the very elements that make the coffee compelling. If you crave a cleaner cup, consider a French press or Chemex instead.
What’s your take? Have you ever tried a paper filter in your Moka pot—and did it work?
Questions & Answers
Does using a paper filter in a Moka pot improve taste?
No, paper filters trap oils, reducing the rich flavor Moka pots are known for. They also slow brewing, leading to weaker coffee.
Why is a paper filter bad in a Moka pot?
Paper filters remove oils and solids, dulling the coffee’s flavor. They also slow extraction, resulting in a less intense and weaker brew.
Information sourced from industry reports and news outlets.

