Physics Brews Controversy: The Espresso Method That Defies Tradition

A new physics paper is stirring up the coffee world, claiming that the traditional espresso brewing method might be all wrong. Researchers suggest that using less coffee and a coarser grind could produce a better shot—a finding that has sparked heated debate among baristas and hobbyists alike. The study, which gained traction on Hacker News, applies fluid dynamics to espresso extraction, challenging long-held beliefs about grind size and dose. Whether you're a seasoned espresso enthusiast or a casual coffee drinker, this research might just change how you make your morning cup.