What coffee grind is best for cold brew?

Use a coarse grind for cold brew. Coarse particles slow extraction during long steeps and help you avoid harsh, over-extracted flavors; if your brew tastes weak, go a notch finer, and if it turns bitter, go coarser and/or shorten the steep time Perkatory Coffee Roasters Copan Coffee Roasters.

Why coarse grind works for cold brew

In immersion cold brew, grounds sit in water for many hours. Finer grinds expose more surface area and extract faster, which can push a long steep toward bitterness. Coarser grinds slow extraction and tend to yield a smoother cup that matches what many people expect from cold brew Perkatory Coffee Roasters Belnano Coffee. If your batch tastes overly bitter or astringent, that’s a strong sign your grind is too fine for your steep time; coarsen and retest Copan Coffee Roasters.

Practical starting settings and a simple recipe

Grind texture and equipment

Grind coarse, about the texture of kosher salt or raw sugar Copan Coffee Roasters. A burr grinder helps keep particle sizes consistent, which makes dialing in easier. If you’re choosing gear, see our guide on why burr coffee grinders are better.

A reliable starting ratio and timing

Use about 1:8 coffee to water by weight for an approachable concentrate, or 1:6 for a stronger one. Steep 12-18 hours, then taste and adjust next time based on the result Copan Coffee Roasters Counter Culture Coffee.

1. Weigh coffee and water. Example: 100 g coffee to 800 g water for 1:8.
2. Grind coarse and combine with cold water in a covered jar or brewer.
3. Steep in the fridge or at cool room temperature for 12-18 hours Copan Coffee Roasters.
4. Strain through a fine-mesh or paper filter for a cleaner cup Perkatory Coffee Roasters.

Dial in your cold brew grind today

• Grind one small test batch at coarse (kosher-salt texture) and steep 12-18 hours.
• Taste, then adjust: go one step finer for more strength, or one step coarser if it’s bitter.
• Log ratio, grind setting and steep time so your best version is easy to repeat.
• Strain twice (mesh, then paper) if you want extra clarity.
• Check your water: if it tastes off from the tap, switch to filtered. See our water guide.

Bean and roast choices

If you prefer a smooth, lower-acidity profile, medium to dark roasts are commonly recommended for cold brew. Lighter roasts can work if you want a brighter, fruit-forward cup, but they may read subtler in cold extraction. Choose based on the flavors you like Perkatory Coffee Roasters Copan Coffee Roasters.

Troubleshooting and quick fixes

If it’s bitter or astringent

Coarsen the grind or shorten the steep on your next batch. Both changes reduce extraction and can smooth the cup Copan Coffee Roasters.

If it’s weak or thin

Go a notch finer, increase the coffee dose (for example from 1:8 toward 1:6), or extend the steep within the 12-18 hour window Copan Coffee Roasters Counter Culture Coffee.

If there’s too much sediment

Strain through a fine-mesh or paper filter to reduce sludge and cloudiness Perkatory Coffee Roasters. A consistent coarse grind also helps.

Want to go deeper on equipment and water for better-tasting brews? Read our guides on burr grinder basics and ideal water hardness for coffee.

Frequently asked questions

How coarse should I grind for cold brew?

Start around the texture of kosher salt or raw sugar. Adjust in small steps: finer for more strength, coarser to reduce bitterness Copan Coffee Roasters.

Can I use pre-ground coffee?

Yes, but look for bags labeled with a coarse grind suitable for cold brew to avoid over-extraction and excess sediment Perkatory Coffee Roasters.

Should I steep at room temperature or in the fridge?

Either works. Steep 12-18 hours, then strain and chill. Choose what’s most convenient and consistent for you Copan Coffee Roasters.