Brewing Basics
Turbulence
The chaotic, non-laminar movement of water through the coffee bed caused by pouring force, agitation, or brewer geometry. Controlled turbulence aids extraction; excessive turbulence stirs up fines and clogs filters.
En détail
In pour-over, pouring from a higher point or with a faster flow rate introduces more turbulence, dislodging particles and refreshing the solvent boundary layer around each ground. Brewer designs like the Tricolate minimize turbulence for ultra-clean cups, while the Hario Switch leverages turbulent immersion-percolation hybrids. Mastering turbulence gives brewers another dial for controlling clarity versus body.
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