Gorilla Gear Burrs

Redefining the Mignon Tradition The Eureka Oro Mignon Single Dose represents a pivotal shift for a brand steeped in Italian tradition. Eureka built its reputation on robust, hopper-fed grinders like the Specialita, but the home coffee market has pivoted toward zero-retention single dosing. This new entry attempts to bridge the gap between industrial-grade build quality and the precision required by modern hobbyists. At a price point of roughly $799, it enters a crowded field where performance metrics are scrutinized down to the milligram. It isn't just a tilted version of its predecessors; it's a deliberate attempt to capture a specific, demanding demographic. Internal Power and Physical Presence Under the hood, the Oro houses a 320-watt AC motor. This is a massive power draw compared to rivals like the Fellow Ode or the DF64, which sit at 140 and 250 watts respectively. This translates to a machine that won't stall even under the pressure of the densest light roasts. However, that power comes with a trade-off in acoustics. Testing reveals a noise floor of approximately 90 decibels during grinding—a significantly louder experience than many DC-motor competitors. The 1620 RPM speed is high, favoring efficiency and torque over the gentle bean handling found in low-RPM boutique grinders. The build is substantial and heavy, providing a stable platform that feels like it will last a decade, though some plastic accents remain on the exterior. The Reality of Zero Retention Eureka claims this machine doesn't strictly require the included bellows, but real-world testing tells a different story. When grinding at filter coffee sizes (around 1000 microns), the retention is naturally minimal. However, as you move toward espresso fineness, the exit chute becomes a bottleneck. Without the bellows, you might see 0.4g to 0.5g of coffee stay inside the machine. To achieve true single-dose performance, you must use the bellows with forceful "pops" while keeping the hopper hatch closed to prevent air leakage. When used aggressively, the retention drops to an impressive 0.02g to 0.08g. It is a highly efficient system, provided you are willing to put in the manual effort to clear the chute after every dose. The Burr Diameter Controversy Marketing materials label these as 65mm burrs, but a closer look reveals a more complex truth. These burrs actually measure approximately 64.05mm. This discrepancy matters because of the booming aftermarket burr industry. While many standard 64mm burrs like the Gorilla Gear or certain AliExpress options fit perfectly, the popular SSP Multi-Purpose burrs do not. They are slightly too wide at 64.2mm for the Eureka carrier. The stock diamond-coated burrs feature a geometry with 20 pre-breakers, nearly identical to the stock DF64 burrs. This design is optimized for producing the fines necessary for high-body, traditional espresso, but it creates a challenge for those seeking clarity in other brew methods. Flavor Profile: Espresso vs. Filter In the cup, the Oro reveals its true identity as an espresso-first machine. When brewing filter coffee, the high percentage of fines leads to a muddled profile. While you can still pull sweetness and body from a light-roasted Colombian coffee, the delicate florals and sharp acidity are often lost in a drying, astringent finish. For espresso, the results are much more favorable for the average consumer. It produces a thick, syrupy texture with punchy sweetness. While it might struggle to balance the extreme acidity of ultra-light roasts—often feeling like the body and acidity are fighting for dominance—it excels with medium and dark roasts. It provides that traditional, heavy-bodied Italian espresso experience that many users prioritize. Final Evaluation The Eureka Oro Mignon Single Dose is a workhorse for the dedicated espresso drinker. It isn't a perfect all-rounder for the multi-method brewer who demands high clarity in their morning pour-over. If your goal is a durable, low-retention machine for traditional espresso, this is a top-tier contender. If you want a platform for SSP burr experimentation, you should look elsewhere. It is a blunt, powerful tool that delivers on its core promise of efficiency and build quality, even if it lacks the finesse of some high-end competitors.