Cold brew coffee in 3 minutes using acoustic cavitation
Engineers at the University of New South Wales in Sydney, Australia, have been able to use sound waves to reduce the brewing time for cold brew coffee from 12 to 24 hours to under three minutes. The group, under the leadership of Dr. Francisco Trujillo, has developed an entirely new type of ultrasonic reactor that brews cold coffee in less than three minutes, and most importantly, the quality of the flavor is not compromised in the least.
The engineers used a modified Breville espresso coffee machine with its patented sound transmission system to build an ultrasonic reactor that injects sound waves at a frequency of 38.8 kHz into the brewing basket. This drastically reduces time spent in brewing and guarantees a smoother, less acidic, and less bitter cold brew compared to traditional methods, with the benefit of twice the yield of extraction and caffeine concentration.
Francisco Trujillo
