Niche Zero coffee grinder defies crowdfunding skepticism with premium single-dosing performance

Solving the retention problem

The unit earns its name from its primary mission: achieving zero retention. While absolute zero is technically impossible due to minor particle exchange, the Niche Zero Grinder manages a level of cleanliness that eliminates the need for purging between adjustments. This is a massive win for home baristas who frequently swap beans or tweak settings. The workflow is refreshingly simple, centered around a Mazzer Koney conical burr set. You weigh your beans, drop them in, and get almost the exact same weight out, delivered into a beautifully designed 58mm dosing cup that fits standard portafilters perfectly.

Performance and the pop-corning caveat

In testing, the espresso quality holds its own against heavy hitters like the Mythos One. While the Mythos One offers slightly more clarity—expected from high-end flat burrs—the Niche Zero Grinder produces incredibly tasty, consistent shots with minimal channeling. It isn't flawless, however. The lack of a hopper weight leads to "pop-corning," where the final few beans bounce around the burrs. This can cause a five-second variance in shot time compared to a full-hopper grind, as the last fragments aren't being forced through by the weight of more coffee.

A new benchmark for home grinders

Despite the pop-corning and a bean capacity that caps out around 55 grams, the Niche Zero Grinder is a triumph of design thinking. Compared to the Mahlkonig EK43—which offers elite burrs but a clunky, industrial user experience—the Niche is a pleasure to use daily. It’s small, quiet, and robustly built. For £500, it provides a specialized single-dosing experience that previously required industrial-grade modifications or four-figure price tags.