‘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.

🍵 😮

  • teslekova@sh.itjust.works
    0·
    2 months ago

    Fascinating. They can make room-temperature coffee in far less time than cold-brew. Could be really great for places that sell a lot of iced coffee.