Product · 1Zpresso
1Zpresso J-Ultra: espresso burr, 8 microns a click
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The 1Zpresso J-Ultra is aimed squarely at people who make espresso by hand and want fine control without buying a large electric grinder. The feature that defines it is the step size: the listing says each click of the external adjustment moves only 8 microns, which is very fine resolution for dialling in a shot.
- Burr
- Coated conical, espresso focused
- Adjustment
- External dial, 8 microns per click
- Capacity
- 35 to 40 g
- Espresso
- Yes, designed for espresso
- Weight
- Not stated
In its favour
- Each click moves only 8 microns, the finest step size in this guide.
- A coated burr is designed for sweeter, finer espresso, according to the maker.
- The foldable handle tucks away and a magnetic catch cup speeds up the routine.
Good to know
- The listing focuses on espresso and Turkish, so it is less suited to coarse filter grinds.
- The weight shown on the listing is not usable, so check before buying for travel.
Our take
A coated burr for espresso
1Zpresso says the J-Ultra's burr is coated and designed for espresso, with the aim of a sweeter cup and very precise grinding. The range runs from fine espresso down to ultra-fine Turkish coffee. The listing does not talk about filter or cafetière, so treat it as an espresso specialist.
The listing sizes it at about 18.3 by 5.6 by 19.1 cm, in an Iron Gray finish with a stainless steel body listed as the material. That is small enough to keep in a drawer next to the espresso machine.
Dialling in with 8 micron steps
Because each click is so small, you can nudge a shot that runs fast or slow by a tiny amount rather than jumping past the sweet spot. The adjustment is external, so there is no need to remove the handle or catch cup to change it.
The magnetic catch cup holds 35 to 40 g and snaps into place, which speeds up moving the grounds into a portafilter or dosing cup.
Handling and upkeep
The handle folds down with a push and a twist so the grinder sits steady and packs small. 1Zpresso includes a premium travel case, a cleaning brush and an air blower. The grinder strips down without tools for cleaning.
The maker states each burr is calibrated at the factory to limit wobble and is built for 100 to 200 kg of coffee over its life, backed by a one-year limited warranty. The weight shown in the specification table is clearly not the grinder's real weight, so it is not a useful guide.
How it compares
Against the 1Zpresso K-Ultra, the J-Ultra gives finer steps but a narrower purpose: the K-Ultra covers filter and French press as well. The Comandante C40 MK4 is described as suitable for all preparation methods, but its listing gives no click size, so for espresso precision on paper the J-Ultra leads.
Verdict
Buy the J-Ultra if espresso is what you make most days and you want the finest stated adjustment among these hand grinders. If you also brew pour-over or cafetière regularly, the 1Zpresso K-Ultra is the more flexible choice, and for an all-method German-made option, consider the Comandante C40 MK4.
Compared with alternatives in: Best manual coffee grinders for espresso and filter
Amazon listing title: 1Zpresso J-Ultra Manual Coffee Grinder Iron Gray, Conical Burr, Foldable Handle, Magnet Catch Cup Capacity 40g, Numerical Adjustable Finely Setting, Faster Grinding Efficiency ideal for Espresso