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Scientists Brewed Espresso at Room Temperature Using Ultrasound and Saved 75% of the Energy. The Coffee Tastes The Same

17 June 2026 at 14:50
Close-up of espresso shot being brewed into a white cup.Ultrasonic espresso’ made with cold water and high-frequency sound waves uses less energy than the traditional version – and taste tests show it’s just as good.

Forget boiling water: Researchers brew espresso with sound waves

12 June 2026 at 14:07

For many coffee lovers, making espresso seems to require two essential ingredients: very hot water and high pressure. But researchers at the University of New South Wales (UNSW) in Australia have challenged that assumption by creating espresso-strength coffee using room-temperature water and ultrasonic sound waves. The new technique could reduce the energy needed to make […]

The post Forget boiling water: Researchers brew espresso with sound waves appeared first on Knowridge Science Report.

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