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What is the best grind for cold drip?

Quick answer

The best grind for cold drip is a medium-coarse grind, similar in texture to kosher salt. Unlike immersion cold brew, which often requires a coarser setting, cold drip uses a slow, controlled drip rate over several hours. This medium-coarse grind balances the extended contact time, ensuring optimal extraction without producing the bitterness associated with finer grinds.

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The real story

Cold drip coffee is a distinct brewing method that sits somewhere between a traditional pour-over and immersion cold brew. Because the water is dripped slowly through a bed of coffee over several hours, the contact time is significant. If you use a grind that is too fine, the water will struggle to pass through the coffee bed, leading to over-extraction and a harsh, bitter cup. Conversely, a grind that is too coarse may result in under-extraction, leaving the final brew feeling thin and lacking in complexity.

A medium-coarse grind is the sweet spot for most cold drip setups. It provides enough surface area for the water to pull out the desired sugars and acids while maintaining a flow rate that prevents the coffee bed from clogging. Think of the texture as being similar to kosher salt or raw sugar granules. This consistency allows the water to saturate the grounds evenly as it slowly makes its way through the filter.

In practice, the specific grind size can be adjusted based on your equipment and the of your beans. If you find your cold drip is tasting sour or weak, your grind might be slightly too coarse, allowing the water to pass through too quickly. If the brew is bitter or the drip rate slows to a crawl, try adjusting your grinder to a slightly coarser setting.

Always remember that consistency is key. Using a high-quality burr grinder will ensure that your particles are uniform in size, which is essential for a balanced extraction. While pre-ground coffee can be used in a pinch, grinding your beans fresh immediately before starting the drip process will significantly improve the clarity and vibrancy of the final result. By dialing in your medium-coarse grind, you can unlock the nuanced, bright flavor profiles that make cold drip such a rewarding method for enthusiasts.

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