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Scientists invent a way to brew espresso with ultrasonic waves—no hot water required

Scientists invent a way to brew espresso with ultrasonic waves—no hot water required

So, researchers have come up with a fascinating method to brew espresso using ultrasonic waves instead of hot water. This innovative technique, led by Colombian researcher Francisco Trujillo, uses sound waves to extract flavors and aromas from coffee at room temperature. While it takes a bit longer than traditional brewing, it saves a whopping 75 percent in energy consumption! Plus, sensory tests showed that people enjoyed the taste just as much, making it a win-win for coffee lovers and the environment.
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