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A deeper coffee bed reduces astringency by trapping long molecules on particle surfaces, not by pore-size filtration.
Drawn from what Jonathan Gagné said
What Jonathan Gagné actually said
- Jonathan Gagné Astrophysicist and coffee researcher
the coffee bed would act on these molecules by filtering them out a bit like oxygen adsorbers keep oxygen in; it just provides a gigantic maze of free surface area for them to stick on, and hopefully the microscopic fluid velocity is gentle enough to not drag them along.
Where this was said
↗The Importance of Bed Depthcoffeeadastra.com
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Added to korrents 20 Sept 2026 · How quotes work · Something wrong? Tell us
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