I used sound waves to make espresso

Francisco Trujillo at The Conversation:

We have developed what we call an ultrasonic espresso: a room-temperature brewing process that uses high-frequency sound waves to extract the flavour, oils, aroma and caffeine from coffee grounds. The result is an espresso-strength coffee made in under three minutes, but needing far less energy than the conventional method.

I can’t wait for James Hoffman’s take on this.

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