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Set a 1Zpresso J-Max between 3.3.3 and 5.0.0 for cold brew, per Honest Coffee Guide's compiled 1Zpresso J-Max chart. Start in the middle of the window and adjust on taste: finer if the concentrate tastes flat or weak even after a full steep, coarser if the batch tastes harsh, filters slowly, or leaves sludge in the jar.
1Zpresso J-Max cold brew settings, and the bands either side
| What | Setting on the 1Zpresso J-Max |
|---|---|
| Cold brew window | 3.3.3 to 5.0.0 [1] |
| The French press band on the same chart | 2.8.1 to 5.0.0 [1] |
| The cold drip band on the same chart | 3.4.1 to 5.0.0 [1] |
| Full grind range of the grinder | 0 to 1190 microns [1] |
The neighbouring bands are there for context. If your cold brew sits at one end of its window and still tastes wrong, the answer is usually a different variable, not another step in the same direction, because past that edge you are grinding for a different brew method.
Why cold brew wants this part of the dial
Cold brew is a long immersion at room temperature or in the fridge, and cold water pulls flavour out slowly. The coarse setting is what keeps the brew from turning bitter and sludgy over that long contact, and it is what lets you filter the batch without a fight.
Dial it in from the chart in 3 steps
1. Set the middle of the cold brew window above and brew once, changing nothing else. 2. Taste against the two failure directions: finer if the concentrate tastes flat or weak even after a full steep, coarser if the batch tastes harsh, filters slowly, or leaves sludge in the jar. The full logic is in the cold brew ratio and cold brew tips. For the rest of the recipe, see the best grinders for cold brew. 3. Move in small steps and write each attempt down; the free dial-in logbook exists for exactly this. Steep length is the other lever. Fix the grind at the coarse end first, then adjust time rather than chasing both at once.
How the 1Zpresso J-Max adjustment reads
The 1Zpresso J-Max uses an external dial read as rotation.number.tick at 8.8 microns per click. Find your zero before trusting any chart: with the hopper empty, close the burrs until they just touch, call that zero, and count from there. A zero point calibrated differently from the chart's shifts every range by the difference, which is behind most complaints that a chart is wrong. The full 1Zpresso J-Max grind settings chart has every other brew method on one page.
Cold brew on other popular grinders
| Grinder | Cold brew setting |
|---|---|
| KINGrinder K4 | 1.35 to 2.40 [2] |
| Turin DF54 | 79 to 90 [3] |
| Turin DF64V | 70 to 90 [4] |
| Turin SD40 | 15.2 to 19 [5] |
| Fellow Ode Gen 1 | 4 to 11 [6] |
Get the grinder
The 1Zpresso J-Max is on Amazon: check the current 1Zpresso J-Max price. We link the search rather than quote a price that will be stale by Friday.
Related reading
FAQ
What grind setting is cold brew on the 1Zpresso J-Max? 3.3.3 to 5.0.0 on the compiled 1Zpresso J-Max chart. Start in the middle of that window, brew once with everything else held steady, then move in small steps on taste.
My cold brew tastes wrong on the 1Zpresso J-Max. Which way do I move? If the concentrate tastes flat or weak even after a full steep, go finer. If the batch tastes harsh, filters slowly, or leaves sludge in the jar, go coarser. Change one thing at a time and write down what you did.
Where do these 1Zpresso J-Max numbers come from? Honest Coffee Guide's compiled 1Zpresso J-Max chart, read from the published table and cited in the sources list on this page. It is a compiled chart built from that site's research and reader feedback, not a manufacturer document, so treat every range as a window rather than a verdict.
Sources
- [1] Honest Coffee Guide's 1Zpresso J-Max chart: https://honestcoffeeguide.com/1zpresso-j-max-grind-settings/
- [2] Honest Coffee Guide's KINGrinder K4 chart: https://honestcoffeeguide.com/kingrinder-k4-grind-settings/
- [3] Honest Coffee Guide's Turin DF54 chart: https://honestcoffeeguide.com/turin-df54-grind-settings/
- [4] Honest Coffee Guide's Turin DF64V chart: https://honestcoffeeguide.com/turin-df64v-grind-settings/
- [5] Honest Coffee Guide's Turin SD40 V1 chart: https://honestcoffeeguide.com/turin-sd40-v1-grind-settings/
- [6] Honest Coffee Guide's Fellow Ode Gen 1 chart: https://honestcoffeeguide.com/fellow-ode-brew-grinder-gen-1-grind-settings/
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