Eureka Mignon Oro Stark Matte Black/Chrome – Espresso Grinder with 65mm Pure Diamond Burrs
You tap your dose on the touchscreen, place the portafilter in the rubberized hands-free fork – and the grinder quietly and deeply pulls through. The 65mm Pure Diamond grinding burrs work silently, and the grounds fall loosely and without clumps into the portafilter. After the programmed time, it stops automatically. The solid metal body sits firmly on the counter, with no wobbling.
The Mignon Oro Stark is the top model of the Mignon Oro series – a grind-by-time grinder with a touchscreen and full metal construction in the compact Mignon format. Coffee Coaching Club carries the Eureka range; Eureka has been manufacturing in Florence, Italy, for over 100 years. This version is Matte Black with Chrome; the Oro Stark is also available fully chrome-plated.
65mm Pure Diamond Burrs and ELR
The 65mm flat burrs are Eureka's patented Pure Diamond burrs. Thanks to their special treatment, they retain their sharpness significantly longer and ensure consistent granulometry over time. The ELR system (Extreme Low Retention) minimizes residues in the grinding chamber and ensures a dosing consistency of approximately ± 0.2 g. The ACE system (Anti-Clump & Electrostaticity) reduces clumps and static charge – the grounds fall loosely into the portafilter.
Touchscreen and Grind by Time
Via the touchscreen, you can program two dosing times in 0.1-second increments plus a manual shot. The grind setting is infinitely and micrometrically adjustable – fine adjustments for espresso to filter, without fixed detents. The height-adjustable, rubberized hands-free fork fits all portafilters, including bottomless ones. High-speed maintenance allows quick access to the grinding chamber without losing the grind setting.
Full Metal and Silent Technology
Base, bean hopper lid, and spout are made of polished aluminum – a completely metal construction that keeps the grinder stable and quiet on the counter. The bean hopper holds 300 g. Silent Technology reduces noise to around 60 dB. Weighing 7.4 kg, the Oro Stark stands firmly and with low vibration.
At a glance
| Grinding burrs |
65 mm Pure Diamond, flat (Eureka patented) |
| Motor |
320 W, 1650 RPM |
| Dosing |
Grind by Time, touchscreen, 2 programs + manual (0.1s increments) |
| Adjustment |
stepless micrometric |
| Retention |
ELR system, dosing consistency around ± 0.2 g |
| Grinding speed |
2.3–2.8 g/s |
| Bean hopper |
300 g |
| System |
ACE Anti-Clump & Anti-Static, hands-free fork (rubberized) |
| Construction |
Full metal, polished aluminum |
| Noise level |
approx. 60 dB (Silent Technology) |
| Dimensions |
approx. 380 × 128 × 186 mm (H × W × D) |
| Weight |
7.4 kg |
| Finish |
Matte Black/Chrome |
| Manufactured |
Florence, Italy |
Who it's for
For anyone who wants to dose from a filled bean hopper with programmed time – at home or in the office – and is looking for 65mm grinding burrs and a full-metal construction in a compact format. Those who pull multiple shots in a row will benefit from the 300g hopper and fast grind-by-time dosing.
If you prefer to grind a fresh single dose per shot and frequently change beans, you'll find suitable alternatives in the single-dose world or the Eureka grinder collection.
Order directly online
Delivery throughout Switzerland and to Liechtenstein within 2 to 4 working days. Click and Collect in Bern, Gerberngasse 44 or Zurich, Hagenholzstrasse 50b – there you can experience the grinder live. Financing via Heylight is possible. Questions about the design or workflow: office@coffeecoachingclub.ch or by phone during business hours.
What goes with it
The Oro Stark pairs with any portafilter machine with a 58mm portafilter – such as the La Marzocco Linea Micra or models from the ECM and Profitec collections. For puck preparation, a WDT tool from the Normcore series; for precise coffee water, Apax Labs. Plus fresh beans like Cozy Chocolate, Nutty Delight, or Very Nutty.
Frequently Asked Questions
Is the Oro Stark available in other finishes?
This version is Matte Black with Chrome. The Oro Stark is also available fully chrome-plated – the grinding mechanism and technology are identical.
Grind by Time or Single Dose?
The Oro Stark doses according to programmed time from the 300g bean hopper – ideal for multiple shots in a row. If you grind a fresh single dose per shot and frequently change beans, a single-dose grinder is a better choice.
How high is the retention?
Low, thanks to the ELR system – dosing consistency is around ± 0.2 g. For frequent bean changes without a supply in the hopper, a single-dose grinder is more suitable.
How loud is it?
Thanks to Silent Technology, around 60 dB – significantly quieter than conventional grinders. You'll get the best impression of the exact sound in person at the showroom.
Can I see it before buying?
Of course. In Bern and Zurich Oerlikon, you can experience the grinder live. Bringing your own beans is welcome.
Roaster's Tip
The 65mm Pure Diamond burrs deliver both body and clarity. For a round, chocolatey-nutty espresso, choose Cozy Chocolate or Nutty Delight. If you're looking for maximum body without acidity, try Very Nutty. Gradually dial in your setting in small steps. This is our recommendation, one of many.
