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Freshness and Grinding, Part 2: How grinders work deep inside

The Science of Coffee

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Exploring the Influence of Coffee Particle Sizes on Espresso Extraction

The chapter delves into the microscopic world of coffee particles, comparing their shapes to familiar objects like Africa and Elvis Presley's hairdo. It emphasizes the importance of particle size in espresso making, explaining how different sizes affect extraction time and flavor. The discussion goes deep into espresso grinding mechanics, highlighting the impact of fines on water flow and the quality of the final espresso shot.

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