The Science of Coffee The Science of Coffee

Coffee Quality, Part 2: How “quality” became a myth

Dec 8, 2025 · 25m

Summary

James Harper explores the origins of the 2004 SCAA cupping form, arguing that its definition of quality reflects specific expert preferences rather than universal truth. He details how George Howell’s Cup of Excellence influenced scoring criteria, particularly acidity, and cites research showing consumers often disagree with expert ratings. The episode challenges the industry’s perception of objective quality, setting the stage for a discussion on the form’s impact on producers.

Topics discussed

Introduction: The illusion of universal coffee quality Questioning the 2004 Cupping Form's legacy Sponsor segment: WMF espresso machines George Howell and the first Cup of Excellence Developing the prototype cupping form Defining acidity: From intensity to quality Quality as a hard-coded preference, not objective truth Scoring as personal preference, similar to wine The misleading language of 'quality' vs 'preference' Expert vs. Consumer preferences and research SCA's stance: Quality is not universal Benefits and harms of a unified quality standard
Listen ad-free on Castria