Scientists Invent a Way to Brew Espresso With Ultrasonic Waves—No Hot Water Required
SMRTR summary
Scientists at Australia's University of New South Wales have developed a way to brew espresso using ultrasonic sound waves instead of hot water. The system uses high-frequency waves to create tiny bubbles that extract flavor, caffeine, and aroma from coffee grounds at room temperature. It takes about three minutes but uses 75% less energy, and in taste tests with 100 people, it matched traditional espresso.
SMRTR provides this summary for quick context. The original article belongs to Wired.
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