Grind your Colombian coffee medium-fine for the AeroPress, about the texture of fine sand or table salt, and slightly coarser than espresso. That middle setting pulls out Colombia’s caramel sweetness while keeping its bright acidity pleasant. It also presses smoothly without clogging the filter.
The rule of thumb is simple: anytime, and only when, your specific AeroPress recipe or roast level changes, your grind changes with it. Let’s dial it in.
What Medium-Fine Actually Looks Like
A medium-fine grind feels like dry beach sand or fine table salt. It is coarser than espresso’s powdery sugar texture and finer than what most drip brewers use.
James Hoffmann, World Barista Champion and author of The World Atlas of Coffee, describes the AeroPress grind as a finer grind than standard drip, allowing high extraction efficiency in short brew times without excessive resistance during the press. That balance matters because the AeroPress is a short-extraction brewer.
With a Baratza Encore, start around setting 11 to 14 and taste from there.
- Grinder type: conical burr (home use)
- AeroPress starting setting: 11 to 14
- Adjustment: stepped, 40 total
- Best for: AeroPress, pour-over, drip
If you use a blade grinder instead, pulse in short bursts until most particles look similar in size and there is little dust.
Why Colombian Coffee Grinds This Way
Most Colombian coffee is washed Arabica grown at high altitude, according to origin data from Café de Colombia and the Colombian Coffee Growers Federation (FNC). Those high-grown beans (Castillo, Caturra, and Colombia varietals) are dense and take longer to extract than softer lowland beans.
Denser beans reward a finer grind because more surface area helps water pull out sweetness in a short steep. A coarse grind on dense Colombian beans can taste sour and thin before the AeroPress timer runs out.
The Specialty Coffee Association’s brewing standards support this approach: grind size is one of the core variables that controls extraction, alongside dose, temperature, and contact time. Finer grinds extract faster and coarser grinds extract slower.
Your Starting Recipe With A Medium-Fine Grind
Here is a repeatable baseline for a single cup. It works with the standard upright method or the inverted method, which flips the brewer for full immersion before pressing.
- Dose: 15 g ground coffee
- Water: 225 to 240 g, giving roughly a 1:15 ratio
- Water temperature: 88 to 92°C (190 to 198°F)
- Contact time: 1.5 to 2 minutes total
- Press time: 20 to 30 seconds of steady pressure
A scale like the coffee scale with 0.1 g readability makes this repeatable. The 1:15 ratio is your standard AeroPress strength starting point, softer for some tastes but safe for Colombian beans.
Adjusting To Taste And Roast Level
Barista Hustle, the coffee-education platform founded by Matt Perger, teaches a simple compass: sour, sharp, or vegetal notes point to incomplete extraction, so reduce particle size. Bitter, dry, or chalky notes point to over-extraction, so increase particle size.
Use the table below to pick a Colombian coffee’s starting grind based on roast level.
| Roast Level | Starting Grind | Why |
|---|---|---|
| Light roast | Finer side of medium-fine | Dense beans need extra extraction surface |
| Medium roast | Medium-fine (baseline) | Balanced sweetness and acidity |
| Dark roast | Medium-coarser | Soluble beans over-extract fast and turn bitter |
Roast level changes grind because darker beans are more porous and dissolve faster. A dark Colombian roast pressed at espresso-fine settings is a common cause of bitterness, not a bad brewer.
The World AeroPress Championship recipe archives confirm the practical range too. Winning recipes built on Colombian lots from Huila, Nariño, and Antioquia cluster around medium-fine grinder settings, such as 15 to 18 clicks on premium hand grinders.
On a Comandante C40, that means starting around 14 to 18 clicks.
- Grinder type: conical burr hand grinder
- AeroPress starting setting: 14 to 18 clicks
- Dial feel: distinct clicks, no detent numbers
- Burrs: stainless steel conical
For the same job on a Timemore C2 or C3, start around 12 to 15 clicks instead.
Troubleshooting Your Cup
Taste your brew before changing anything. The cup tells you the direction every time.
A sour, thin, sharp, or salty taste can indicate under-extraction, meaning your grind is too coarse for that bean. Move your grinder one or two settings finer or steep twenty to thirty seconds longer.
A bitter, dry, or astringent taste can indicate over-extraction, meaning your grind is too fine. Move one or two settings coarser or drop your water temperature slightly.
Extreme plunge resistance is its own signal: too many fines or too fine a grind. Go coarser until the press takes a comfortable twenty to thirty seconds of pressure.
One useful synthesis point: grittiness in the cup is not a grind-size problem at this setting. The AeroPress paper filter holds back sediment, so a gritty finish usually points to your filter seal rather than your grind.
Method Variations That Change The Grind
Method and filter choice shift the answer slightly. An inverted method with a longer steep can go slightly coarser because the water has more contact time with the grounds.
A very short, rapid press can go slightly finer because extraction happens in less time. A metal filter instead of paper lets more fine particles through, so backing off slightly coarser keeps the cup clean.
If you brew Colombian on other devices too, the grind logic changes entirely: drip brewers need a coarser salt-like setting, while espresso demands a much finer powdery grind. For something like cold brew, which extracts for hours, a very coarse grind is the standard.
Each of those methods deserves its own dialing process. The AeroPress settings here will not translate directly, but the taste-based adjustment logic does.
Conclusion
Grind your Colombian coffee medium-fine for the AeroPress, roughly fine table salt texture, starting around setting 11 to 14 on an Encore or 14 to 18 clicks on a Comandante C40. Brew 15 g of coffee with 225 g of water at 88 to 92°C for about one and a half to two minutes, then taste and adjust by sip: sour means finer, bitter means coarser. Change one variable at a time and you will land on your ideal setting within a few brews.