Grind size — the master dial
Why grind size changes everything — 5 min
Grinding is the manufacture of surface area. Water can only dissolve what it touches, and a whole bean offers it almost nothing — flavour is locked inside roughly a million cells behind woody walls. Every fracture exposes fresh interior; halve the particle size and you roughly double the surface the water can work on. That is why grind is the strongest lever you own: it multiplies the speed of everything else you do.
One step finer moves a V60 more than five degrees of water temperature. If you can adjust only one thing about your setup, adjust this.
In the app
The rest of this lesson is in the Blend app — with the interactive widget and the practical brew.
Finish this lesson in the app.
The interactive widget, the footnotes, and the practical brew you can taste. Free on iOS and Android.