Coffee Grind Size Guide: Match Your Grind to Your Brew Method
Most people blame the coffee when the cup tastes wrong. Nine times out of ten, it's the grind.
We've been roasting in small batches in Greenport since 1987. And the number one thing we hear from people who are frustrated with their cup at home — after they've already bought good beans — is that something still feels off. Usually it comes down to grind size.
Get it right and the cup opens up. Bold, smooth, full. Get it wrong and you're stuck with something bitter or sour that no amount of cream fixes. This guide walks you through the whole thing — which grind goes with which brew method, how roast level plays into it, and what to do when something's not tasting right.
And if you want a shortcut — skip to the bottom and try our Coffee Doctor. Answer a few questions, get a diagnosis.
The Simple Rule First
Before we get into specifics: longer brew time needs a coarser grind. Shorter brew time needs a finer grind.
French press steeps for four minutes — coarse grind. Espresso runs in 25–30 seconds — fine grind. Everything else falls somewhere in between. Keep that in mind and the rest of this will make a lot more sense.
Grind Size by Brew Method
| Grind Level | Best For | Our Pre-Ground Option |
|---|---|---|
| Extra Fine | Turkish coffee | Whole Bean |
| Fine | Espresso machine | Espresso Machine (Fine) |
| Medium-Fine | Moka pot, AeroPress | Stovetop Espresso / Bialetti (Medium Fine) |
| Medium | Pour over, drip, AeroPress | Drip / K Cup - Paper Filter (Medium) |
| Medium-Coarse | Chemex, metal filter drip | Drip - Metal Filter (Medium Coarse) |
| Coarse | French press, percolator | French Press / Percolator (Coarse) |
| Extra Coarse | Cold brew | French Press / Percolator (Coarse) |
Breaking It Down by Brew Method
Espresso — Fine
Espresso is fast and high pressure. The grind needs to be fine enough to slow the water down and give it enough to work with in those 25–30 seconds. Small adjustments make a big difference here — even a slight change in grind can shift the shot noticeably.
If you're pulling espresso at home, our Orient Espresso was built for this method. It's our most versatile roast — brown sugar, chocolate, a subtle floral finish. Pulls clean every time.
Moka Pot / Stovetop — Medium-Fine
A little coarser than espresso. The lower pressure means you don't need the same resistance in the grind, and going too fine here tends to produce a bitter, over-extracted result. When you order pre-ground from us, select Stovetop / Bialetti (Medium Fine).
AeroPress — Medium to Medium-Fine
The AeroPress is forgiving. Short brew time, go finer. Longer steep, go coarser. If you're ordering pre-ground, Drip / K-Cup – Paper Filter (Medium) is your closest starting point.
Pour Over — Medium
Pour over is all about controlling the flow. Medium grind lets the water move through at the right pace — not too fast, not too slow. If it drains too quickly, go a little finer. If it takes forever, go a little coarser. Pre-ground pour over customers: Drip / K-Cup – Paper Filter (Medium) is your match.
Automatic Drip — Medium
Most home drip machines are set up for medium grind. A paper filter gives you a cleaner, brighter cup. A metal filter lets the natural oils come through for more body and richness — totally a personal preference call. Start at medium and adjust from there based on what you're tasting.
French Press — Coarse
Four minutes of full immersion means you need a coarse grind. Any finer and the long steep over-extracts the coffee — bitter, flat, muddy. Coarse grind also means fewer fine particles sneaking through the metal screen.
Our Earthy & Seductive blend was practically made for French press — it's deep, full-bodied, and the immersion method really lets it open up.
Cold Brew — Extra Coarse
Cold brew sits with water for 12–24 hours. The grind has to be extra coarse to keep it from over-extracting over that long stretch. For cold brew, we recommend whole bean so you can grind at home to the right range. Our dark roasts make an incredible cold brew concentrate.
Dark Roast vs. Medium Roast — The Grind is Different
This is something a lot of people miss. Dark roasts and medium roasts don't behave the same way — even in the same brewer.
Dark roasts spend more time in the roaster. That makes the bean more porous, more soluble, and easier to extract. Which means at the same grind setting, a dark roast will give you more than a medium roast — and if you're not careful, more than you wanted.
Dark roast: grind slightly coarser than you normally would for that method. It doesn't need as much help extracting.
Medium roast: grind slightly finer, and push your water temperature up a bit. Medium roasts are denser and need a little more to fully open up.
At Aldo's, nearly everything we roast is a French dark roast. The exceptions are our Guatemala Estate SHB and Ethiopia Yirgacheffe, both mediums. If you're brewing either of those, go a touch finer and target water around 199–202°F.
Something Taste Off? Here's Where to Start.
Before you blame the beans, check the grind. Most cups that taste wrong at home are a grind adjustment away from tasting right.
| What You're Tasting | What's Probably Happening | What to Do |
|---|---|---|
| Sour, thin, hollow | Under-extracted — grind too coarse or brew too short | Grind finer, brew longer, or raise water temp |
| Bitter, flat, ashy | Over-extracted — grind too fine or brew too long | Grind coarser, brew shorter, or lower water temp |
| Muddy, heavy sediment | Too many fine particles getting through | Grind coarser — especially in French press and cold brew |
| Espresso running uneven | Uneven puck or grind slightly too fine | Distribute grounds more evenly, go slightly coarser |
Still can't nail it? Our Coffee Doctor walks you through it step by step — answer a few questions about your setup and your cup, and it'll tell you exactly what to adjust.
☕ Not Sure What's Wrong With Your Cup?
Our Coffee Doctor is a free interactive tool that diagnoses your brew and tells you exactly what to fix — grind, temp, ratio, method. Takes about 60 seconds.
TRY THE COFFEE DOCTOR →The Short Version
Longer brew time, coarser grind. Shorter brew time, finer grind. Dark roasts get a little coarser than mediums for the same method. Taste your cup, make one small adjustment at a time, and trust what you're tasting — that's how you dial it in.
If the cup tastes right, the grind is right.
Not sure where to start with the coffee itself? Our Coffee Discovery Box gives you 8 of our roasts — 1/4 lb each — roasted fresh and shipped fast. Find your favorite without committing to a full bag of each.
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