Calibration for espresso vs filter
How to calibrate a grinder for espresso versus filter coffee, and why the grind requirements differ between methods.
Puck resistance
Scaling recipes up and down
How to scale coffee recipes for larger or smaller brews while keeping strength and extraction targets consistent.
Pressure and flow profiling curves
How pressure and flow profiling curves influence espresso extraction, and how baristas and researchers use them to optimize flavor and consistency.
Fines migration and flow restriction
How fines migration—the movement of tiny coffee particles during extraction—affects flow restriction, channeling, and cup quality.
Puck compressibility and porosity
How the compressibility and porosity of an espresso puck influence flow resistance, extraction uniformity, and cup quality.
Grinder-to-puck workflow timing
Why timing between grinding, puck preparation, and extraction matters, and how to streamline workflow for consistency.