What Grind Size for Pour-Over Coffee: Coffee Machine vs. Pour-Over - I Focus More on Inner Beauty

FrontStreet Coffee - An Introduction to Pour-Over Coffee Grind Size

Different grinders use different adjustment dials, so the first step is to check your grinder's model and read the manual to understand which direction and how far to turn the settings. In general, if you get into the habit of checking your grinder regularly, you will only ever need very small adjustments. Moving the dial by just 3 millimeters changes the fineness of the grounds noticeably — small as 3 millimeters sounds, the extraction time for the same dose of coffee can shift by 3-5 seconds.

Grinder Setting Parameter Reference:

Small Fuji Practical Parameters:

• #4.5 (Suitable for a lighter taste, or taming the burnt bitterness of dark roast beans)
• #3.5~#4 (Medium concentration, suitable for light, medium, or medium-dark roasts)
• #3 (Suitable for a heavy taste, but not recommended for dark roast beans)

Small Flying Eagle Practical Parameters:

• #4 (Suitable for a lighter taste, or taming the burnt bitterness of dark roast beans)
• #3~#3.5 (Medium concentration, suitable for light, medium, or medium-dark roasts)
• #2.5 (Suitable for a heavy taste, but not recommended for dark roast beans)

The smaller the setting, the finer the grind and the richer the extraction. For the Small Flying Eagle — the grinder most pour-over enthusiasts reach for — settings #3.5~#3 give a medium concentration and are the sweet spot for pour-over. Set coarser at #4, it can still handle dark roast beans or light-to-medium roasts, but the extraction rate drops, so expect some under-extraction and a thinner mouthfeel.

Brewing at #3 is the safest choice: it suits light, medium and medium-dark roasts for a popular palate. Dark roasts ground at #3, however, can turn too strong and bitter. Going half a setting finer to #2.5 raises the extraction rate by roughly 0.5%~1.5% compared to #3 — a substantial change. That shrinks your margin for error: with water that is too hot or a brew that runs too long, even a small slip can ruin the cup.

Knowledge Point:

Grind size governs how much of the coffee's soluble compounds are released, and how fast. Broadly, grind coarseness falls into five levels: extra-fine, fine, medium-fine, medium, and coarse.

FrontStreet Coffee Recommendation

Once your grind is dialed in, the beans matter just as much. For light roasts that reward a finer, precise grind, FrontStreet's Ethiopia Yirgacheffe Guodingding offers clean citrus, berry and floral character with a green-tea finish, while FrontStreet's Panama Boquete Red Label Geisha brings jasmine florals, citrus and a silky, tea-like sweetness for those seeking a top-tier cup.

If you prefer a richer, fuller brew at a slightly coarser setting, FrontStreet's PWN Indonesian Golden Mandheling delivers low acidity, a long mellow body with herbs and dark chocolate, and FrontStreet's Jamaica Blue Mountain No.1 gives you cream, caramel and nutty balance in a cup that suits almost everyone.