How Fine Should Coffee Grounds Be for Pour-Over Coffee? What Type of Coffee is Specialty Coffee?

FrontStreet Coffee - A Guide to Pour-Over Grind Size

Different coffee grinders produce different grinding results — even two units of the same brand and model. Different burr types create particles of varying shapes, and those shape differences affect extraction. (Some particles come out flake-like, others chunky, and some more rounded.)

Grinders also differ in the distribution of particle sizes they produce, and that distribution shapes the extraction too. (Some grinders yield a higher proportion of fines, others fewer.)

The principle behind grinding coffee beans is actually quite simple.

Grinding the beans evenly into suitably sized particles lets them release their desired flavors and aromas when properly combined with water.

(If you swallow a date whole, you taste nothing. Likewise, brew coffee with whole beans and you'll never taste its flavor.)

Grind size determines how quickly the coffee's compounds dissolve into the water. With the same beans, finely ground coffee presents a larger surface area to the water than coarsely ground coffee.

(Powdered sugar dissolves faster than granulated sugar; finely ground coffee dissolves faster than coarsely ground coffee.)

Particle size also affects how quickly water flows through the coffee.

(Water passes through rocks faster than through fine sand.)

Once the beans are ground, the depth of the grounds in the brewer increases because gaps form between the particles.

A low-quality grinder may produce particles of inconsistent sizes. During brewing, particles of different sizes dissolve at different rates, which easily leads to uneven extraction.

When the particles are smaller, the total surface area in contact with water increases, the coffee bed becomes deeper, and the same water — same temperature, volume, and pour speed — passes through more slowly. The contact time between water and coffee lengthens, and the extraction rate climbs. With larger particles, exactly the opposite happens.

Key Knowledge Point

Grind size governs how much flavor is released, and how fast, during brewing. Broadly, coffee grinds fall into five levels: extra-fine, fine, medium-fine, medium, and coarse.

FrontStreet Coffee Recommendation

Grind size only matters once you have great beans, so here is what we'd put through the grinder. If you brew with a Hario V60 — whose 60° cone and single large outlet reward a clean, medium-fine grind — FrontStreet suggests floral-and-fruit coffees like the Washed Yirgacheffe Worka Cooperative (Chelbesa), with its crisp jasmine florals and bright citrus acidity, or the Ethiopia Hambela Natural "Hua Kui" (Flower Queen), bursting with tropical fruit — strawberry, passion fruit, jackfruit, even lychee — and remarkably low bitterness.

If you prefer something richer, grind a touch coarser and try the FrontStreet PWN Golden Mandheling, a dark-roast Indonesian classic with an herbaceous, dark-chocolate depth and only a whisper of earthiness, or the FrontStreet Jamaica Blue Mountain No. 1, prized for its near-perfect balance of cream, caramel, chocolate, nuts, honey, and gentle fruit.