Sound Waves Replace Heat in Revolutionary Espresso Brewing

UNSW Sydney researchers have developed an ultrasonic brewing process that produces espresso-strength coffee using room-temperature water instead of heated water, cutting energy consumption by up to 75%. Blind taste tests confirmed the ultrasonic version is indistinguishable from traditionally brewed espresso while maintaining the same flavor, body, and caffeine concentration. This breakthrough has major implications for sustainable coffee production, especially for industrial beverage manufacturers who could significantly reduce energy costs and brewing time.