The Importance of Grind Size
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Grind size controls how fast water pulls flavor. If the cup is bitter, sour, or thin, fix grind before you blame the beans.
Why grind size matters
Finer grind: more surface, faster extraction. Coarser: slower. You want sweetness in the middle, not the early sour or the late bitter.
Grind size by brew method
Extra coarse: cold brew.
Coarse: French press.
Medium-coarse: Chemex.
Medium: drip.
Medium-fine: pour over and Aeropress.
Fine: moka.
Extra fine: espresso.
How to read the cup
Bitter and dry: grind coarser or brew shorter.
Sour and thin: grind finer or brew longer.
Change one variable at a time.
Burr vs blade
Blade grinders make dust and chunks. Burr grinders make even particles. A basic burr beats any blade.
Grind right before brew. Whole beans stay useful for weeks. Ground coffee fades in days.
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