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Advanced Techniques

Puck Screen vs Paper Filter on Espresso: The One That Actually Cuts Channeling (and When It Makes Coffee Worse)

February 3, 2026 11 min read

You know that sound when a shot starts out syrupy, then suddenly goes splat-splat blond and angry? That’s channeling—and it can make your Ethiopia taste like lemon Pledge. I tested puck screens and paper filters like a recovering tech journalist with a spreadsheet problem. Here’s what actually changes taste, texture, and consistency.