Physics-wise, paper is cellulose, which is excellent at trapping coffee oils (lipids) through adsorption. This is why paper-filtered coffee has a "cleaner" mouthfeel and higher clarity compared to metal filters, which allow oils and micro-fines to pass through. 5. Thermodynamics: The Energy of Extraction Temperature is the "speed limit" of coffee physics.
The thermal energy available to pull flavor out of the cells. The Physics Of Filter Coffee Pdf
Coffee grinds are not uniform; they follow a Particle Size Distribution (PSD). Physics-wise, paper is cellulose, which is excellent at