Paper puck filters and channel control
How paper puck filters influence espresso extraction, reduce channeling, and affect clarity and mouthfeel.
Slows flow
Declining vs flat pressure profiles
The differences between declining and flat pressure profiles in espresso, and how they influence extraction dynamics and flavor outcomes.
Bed depth and hydraulic resistance
How coffee bed depth influences hydraulic resistance in espresso and filter brewing, shaping flow rates, extraction uniformity, and flavor balance.
Melitta and classic cone approaches
How Melitta and traditional cone-shaped brewers function and how to optimize their use for balanced extraction.
Darcy-style intuition for flow in beds
How to conceptualize water flow through coffee grounds using principles inspired by Darcy’s Law, connecting pressure, resistance, and flow rate.
Filter permeability and resistance
How the physical properties of coffee filters affect water flow, extraction, and cup quality.