A jolt of coffee trivia

May 13, 2024

A cold-brew cup of Joe is made by steeping the grounds in cold water, a process that takes between 12 and 24 hours. But Australian scientists say they’ve gotten that down to 3 minutes using what technology? Is it … A.) Ultraviolet waves, B.) Ultrasound waves, C.) Radio waves or D.) X‑rays?

The answer: B.) Ultrasound waves. Aussie scientists rigged a Breville espresso machine with a “patented sound transmission system” to send ultrasound waves into the almost-brewed coffee, and out came cold brew. Don’t try this at home.

Tags: coffee, home, hours, machines, radio, radio waves, scientists, sound, system, technology, trivia, water, X (Twitter)

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