Australia engineers replace hot water with sound to make espresso
Key takeaways
- Add ARY News on Google AAResize The University of New South Wales in Sydney, Australia, is revolutionizing the espresso-making process by demonstrating that hot water is no longer necessary.
- In this innovative method, a small metal transducer attached to a standard espresso basket emits sound waves beyond the range of human hearing.
- This intense mechanical agitation efficiently extracts oils, flavor compounds, and caffeine from the coffee.
Why this matters: local context for readers following news across Pakistan and the region.
Add ARY News on Google AAResize The University of New South Wales in Sydney, Australia, is revolutionizing the espresso-making process by demonstrating that hot water is no longer necessary. Engineers and food scientists have developed a technique called “ultrasonic espresso,” which leverages high-frequency sound waves to brew an espresso-style shot at room temperature in under three minutes.
In this innovative method, a small metal transducer attached to a standard espresso basket emits sound waves beyond the range of human hearing. This process induces acoustic cavitation, in which microscopic bubbles form and rapidly collapse, generating bursts of force that effectively break down coffee grounds.
This intense mechanical agitation efficiently extracts oils, flavor compounds, and caffeine from the coffee.