Australian scientists learn to make cold brew coffee in 3 minutes instead of 12-24 hours

Australian scientists have learned to make cold brew coffee in just 3 minutes instead of the usual 12-24 hours. Cold brew coffee is made by steeping coffee beans in cold water to extract a concentrate. This type of drink is sweeter and less bitter/acidic than regular hot coffee, which is why it is gaining popularity. The main problem was that the soaking process took a very long time. Science came to the rescue: scientists have learned to use ultrasound to significantly speed up the cold brewing process, which now takes only 3 minutes.