The Geimiori U78 and U64 grinders. All images courtesy of Wirsh.
With striking design and innovative anti-static features, a new brand of coffee grinders called Geimori is making its way towards the high-end home and light commercial markets.
The Geimori GU78 and GU64 models are the first fully in-house creations of startup home coffee equipment parent company Wirsh.
The company, which maintains offices in both the United States and China, has raised more than $180,500 in preorders for the machines via a Kickstarter that had two weeks remaining, as of this writing.
Rendering.
The Geimori GU64 will carry a price of $499 and the GU78 will go for $999, with an anticipated online sales launch in May 2025.
Dual interventions in the Geimori GU78 model catch the coffee coming and going through the grind chamber, adding moisture on the way in and negative ions on the way out, both minimizing static electricity.
The spritzing lid of the Geimori GU78.
The lid of the GU78’s single-dose-oriented hopper contains what the company calls the Spark Spray System, which is essentially an atomizer that sends a fine and calibrated mist of water onto the whole beans prior to grinding. Known in coffee enthusiast circles as the Ross Droplet Technique (RDT), the small addition of moisture reduces static electricity.
“The Spark Spray system delivers a precisely controlled amount of moisture, about 0.04 ml per spray,” Bobi Li, the founder of Wirsh and Geimori, told Daily Coffee News. “There’s no need for any additional cleaning or drying time, and the minimal moisture won’t harm any parts or affect grinder performance.”
The smaller lid of the GU64 does not contain the Spark Spray.
Rendering.
At both models’ exit chutes, outbound grounds are subjected to “Plasma Anti-Static Technology,” involving the emission of negative ions to neutralize the positive charge developed due to friction during the grind.
The company said the combination of these measures results in a tidy, spray-free accumulation of grounds in any portafilter basket or other receptacle.
In both grinders, a pre-breaker auger crumbles beans while delivering them from the hopper to a vertically-mounted set of custom flat burrs. A stepless grind adjustment system alters grind size by 5.5 microns per indicator line around the dial. Brushless DC motors spin the burrs at user-adjustable speeds ranging from 500-1,500 RPM.
Patented burr options include sets optimized either for filter brewing or for espresso, and are accessible inside the grinder via a “5-second” quick release mechanism for cleaning or swapping.
Li, who created Wirsh in 2021 following an existing passion for coffee gadgetry, named the premium Geimori brand after a piece by Japanese composer and pianist Ryuichi Sakamoto.
Additional cafe-caliber equipment in development under the Geimori brand currently includes a milk frother, a brewing machine and another grinder.
Rendering.
“Our designers are based in the U.S. and China, and manufacturing takes place in China,” Li told DCN. “This allows us to combine creative expertise with efficient production. We’re very proud of the fact that the Geimori grinders represent our first fully in-house designs.”
[Editor’s note: This story has been updated. An earlier version incorrectly reported the volume of Spark spray as 0.4ml.]
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Howard Bryman
Howard Bryman is the associate editor of Daily Coffee News by Roast Magazine. He is based in Portland, Oregon.
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