The Eureka Mignon Zero 55S is a compact electric coffee grinder tailored for multi purpose grinding. Hand-assembled in Florence, Italy, it emphasizes precision and minimal waste, drawing from Eureka’s experience in professional equipment to suit home setups. Its design prioritizes fresh grounds per use, which helps preserve bean flavors by reducing exposure to air and old residues.

At the core are 55mm flat burrs made of hardened stainless steel, which spin at 1350 RPM under a 310W direct-drive motor. This setup yields a grinding speed of about 1.2–1.8 grams per second for fine espresso settings, producing even particle distribution that supports consistent extraction. The burrs’ durability means they hold sharpness over extended use, though they may require occasional servicing for optimal performance.

What sets the Zero 55S apart is its focus on low retention—typically under 0.2 grams—achieved through the Anti-Clumps & Electrostaticity (ACE) system. This technology uses a vented hopper and integrated blow-up bellows to expel grounds and air, clearing the chute after each grind with a simple press. The result is nearly identical output weight to input, minimizing guesswork in dosing and avoiding stale coffee buildup. For context, this is a step up from many grinders that retain 1–2 grams, which can alter taste in back-to-back brews.

Adjustment is handled by a stepless micrometric dial on the side, allowing infinite tweaks from Turkish-fine to coarse filter levels. An ergonomic “King Size” knob makes small changes intuitive, though replicating exact coarser settings might take practice without markers. The hopper holds 45 grams of beans, ideal for one or two shots, and pairs with a matching stainless steel dosing cup that fits the adjustable fork for hands-free operation.

Eureka’s Silent Technology incorporates rubber dampeners to cut noise by around 20 dB from standard grinders, landing it in the quieter range for home use—think conversational levels rather than appliance roar. The die-cast aluminum body measures roughly 4.7 x 5.5 x 13.6 inches and weighs 12.3 pounds, making it stable yet easy to store on a counter.

10 Year motor Warranty from Eureka