Medium-fine, the texture of table salt, is the grind setting that works for most AeroPress recipes. That’s finer than a French press grind and slightly coarser than espresso.
There is no single grinder number that works for every AeroPress brewer, because grind settings are not standardized across brands. The right setting also shifts depending on which AeroPress recipe you’re following, since a short one-minute brew and a longer two-minute steep don’t want the same particle size.
This guide gives you a starting point, shows you how popular grinders translate that starting point into an actual dial setting, and walks through exactly how to adjust once you taste the cup.
What Grind Setting Works Best for AeroPress
Medium-fine, with a texture close to table salt, is the baseline grind for a standard AeroPress brew. It sits between a coarse French press grind and a fine espresso grind, closer to the espresso end of that range.
Grinder settings are not universal because burr shape, grinder age, and calibration all differ between machines. A “12” on one grinder can be finer or coarser than a “12” on another.
That’s the biggest source of confusion with this question. The fix is to treat any number below as a starting range, then confirm it by taste on your own machine, not as a fixed setting that will work everywhere.
A AeroPress coffee maker gives you room to work within that medium-fine range because it uses both immersion and light pressure, unlike a pour-over cone that depends on gravity alone.
How Your AeroPress Recipe Changes the Grind
AeroPress inventor Alan Adler’s original method calls for a fine drip or espresso grind, brewed in about one minute with water around 175 to 185°F (80 to 85°C), according to AeroPress Inc’s own brewing instructions. The short brew time and lower water temperature are what keep that fine grind from turning bitter.
The now-common standard and inverted methods used by many specialty coffee drinkers call for a slightly coarser setting. James Hoffmann, in How to Make the Best Coffee at Home, recommends a grind on the finer side of medium-fine for a roughly two-minute steep, noting that grinding too fine makes the AeroPress hard to press and can cause channeling, where water cuts through the coffee bed unevenly instead of passing through it all.
Both methods are correct. They just answer different questions: how fast do you want to brew, and how much pressure do you want to apply at the end.
Grinder Settings for Popular Machines
Use the table below to translate the medium-fine target into an actual setting on a few common grinders.
| Grinder | AeroPress Starting Setting | Grinder Type |
|---|---|---|
| Baratza Encore | Between 11 and 15 | Conical burr |
| Timemore C2 / C3 | 13 to 16 clicks | Conical hand grinder |
| Fellow Ode Gen 2 | 3.0 to 4.2 | Flat burr |
| No grinder reference available | Aim for a texture like table salt, finer than the kosher salt look used for drip coffee | Any burr grinder |
Those grinder ranges come from Prima Coffee’s grinder calibration guidance for conical and flat burr setups. A Baratza Encore burr grinder is a common choice for home AeroPress brewing because its stepped settings make it easy to repeat a setting once you find one you like.
Key Specifications, Baratza Encore:
- Burr type: Conical, 40mm
- Settings: 40 stepped positions
- Motor: DC, low heat retention
A Fellow Ode Gen 2 flat burr grinder works well for the same range if you prefer a flat burr’s more uniform particle size. Either grinder gets you into the right zone, so the setting matters less than confirming it with a test brew.
Fixing Sour, Bitter, or Hard-to-Press Coffee
Taste and plunge feel are your two main signals for adjusting grind. A sour, thin, or watery cup can indicate under-extraction, where water moved through the grounds too quickly to pull out enough flavor.
Grind finer and brew again. A slightly finer setting slows the water down and gives it more time in contact with the coffee.
A bitter, harsh, or hollow cup, or a plunge that takes real force, often points to too many fine particles clogging the paper filter. According to Barista Hustle’s research on AeroPress extraction, an AeroPress can comfortably extract coffee across roughly a 400 to 900 micron particle range, and grinds finer than that create enough fines to seal against the filter, forcing you to press harder and raising the risk of channeling and astringency.
Grind coarser and press gently, using your body weight rather than force. If the plunge still fights you after that, the grind is still too fine for that recipe.
Why Grind Size Changes Your AeroPress Cup
Grind size controls two things at once: how much surface area is exposed to water, and how easily water can flow through the coffee bed. A finer grind exposes more surface area, which speeds up extraction.
It also slows the water’s path through the grounds and increases resistance against the plunger. A coarser grind lets water move faster but pulls less flavor from each particle in the same amount of time.
This is also why a weak-tasting cup isn’t automatically a grind problem. Since AeroPress lets you control steep time separately from grind size, a weak cup from a short brew can often be fixed by steeping longer before you touch the grinder at all.
If you’re used to dialing in a grind size for pulling espresso shots, the AeroPress gives you more forgiveness because immersion brewing is more tolerant of small grind changes. The same logic runs the other direction too: if you’re coming from brewing with a French press plunger, expect to grind noticeably finer for AeroPress, since that method relies on a much coarser bed to avoid sediment in the cup.
Putting It Together
Start at medium-fine, a texture close to table salt, and brew one cup before you change anything. Taste it, check how hard the plunge felt, and adjust one small step at a time.
That single adjustment, repeated over two or three brews, will get you closer to the AeroPress cup you actually want than any fixed number ever could.
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