Grind size is the single most important variable in coffee brewing — more important than water temperature, brew time, or even the beans themselves. The wrong grind can make a $30 bag of specialty coffee taste worse than gas station drip. Here's our complete guide to getting it right every time.
Why Grind Size Matters
Coffee extraction is a function of surface area and contact time. Finer grinds expose more surface area, extracting flavors faster. Coarser grinds extract slower. Every brewing method has an ideal extraction window — too fast (over-extracted) tastes bitter and harsh; too slow (under-extracted) tastes sour and thin.
The goal is to match your grind size to your brewing method's contact time:
- Short contact time (espresso: 25-30 seconds) → Fine grind
- Medium contact time (pour-over: 3-4 minutes) → Medium grind
- Long contact time (French press: 4-5 minutes) → Coarse grind
- Very long contact time (cold brew: 12-18 hours) → Extra coarse grind
Grind Size Guide by Brewing Method
Extra Coarse (Sea Salt)
Best for: Cold brew, cowboy coffee
Chunky, visible pieces about the size of coarse sea salt. For cold brew, the extended steep time (12-18 hours) means you need minimal surface area to avoid over-extraction. Our Dark Grove Blend is exceptional as cold brew at this grind — the chocolate and molasses notes intensify beautifully.
Coarse (Kosher Salt)
Best for: French press, percolator, cupping
Distinct particles about the size of kosher salt. French press uses a metal mesh filter that lets fine particles through (creating sludge), so a coarse grind keeps your cup clean. Steep 4 minutes, press slowly, and pour immediately. Our Original Roast at this grind produces a full-bodied, sweet cup with visible oils on the surface.
Medium-Coarse (Rough Sand)
Best for: Chemex, clever dripper, flat-bottom drippers
Between coarse and medium — like rough beach sand. The Chemex's thick paper filter and longer drain time need a slightly coarser grind than a standard pour-over. This grind produces the clean, bright cups that Chemex is famous for. Try our Morning Light Roast here — the clarity is stunning.
Medium (Table Salt)
Best for: Drip coffee makers, pour-over (V60, Kalita Wave), AeroPress (standard)
The most versatile grind size — about the texture of table salt. This is what most pre-ground coffee is set to, and it works well in automatic drip machines and manual pour-overs. For V60, aim for a 3:00-3:30 total brew time. If it's running fast, go slightly finer; if it's stalling, go slightly coarser.
Medium-Fine (Fine Sand)
Best for: AeroPress (inverted method), Moka pot, siphon
Finer than table salt but not powder — like fine beach sand. The AeroPress inverted method uses pressure and a shorter steep, so a finer grind extracts more in less time. Moka pots need this grind to create proper pressure without choking the basket.
Fine (Powdered Sugar)
Best for: Espresso
Very fine, almost powdery — between table salt and flour. Espresso machines force water through the grounds at 9 bars of pressure in 25-30 seconds. The fine grind provides enough resistance to build pressure while allowing proper extraction. Dial in by adjusting grind until your shot pulls in 25-30 seconds for a 2:1 ratio (18g in, 36g out).
Extra Fine (Flour)
Best for: Turkish coffee (ibrik/cezve)
The finest possible grind — like flour or cocoa powder. Turkish coffee isn't filtered, so the grounds must be fine enough to suspend in the liquid and settle to the bottom of the cup. Most home grinders can't achieve this — you'll need a dedicated Turkish grinder or a high-end hand grinder.
Our Recommendation: Grind Fresh
We always recommend buying whole bean and grinding immediately before brewing. Pre-ground coffee loses freshness 5-10x faster than whole bean because of the dramatically increased surface area exposed to oxygen. Our honey seal helps pre-ground stay fresher longer, but whole bean is still the gold standard for flavor.
If you don't have a grinder, we offer all our roasts in pre-ground options optimized for drip/pour-over (medium grind). Just select "Ground" when ordering.