Espresso Without Heat Using Sound

Scientists have cracked the code on making espresso without heat—using sound waves instead. A team in Australia, led by a Colombian researcher, developed “ultrasonic espresso” that extracts flavor, oils, and caffeine at room temperature using high-frequency sound and acoustic cavitation. Though slower (3 minutes vs. 30 seconds), it slashes energy use by 75%, making it ideal for cafes and large-scale coffee production. After tweaking grind size and power levels, they matched the Specialty Coffee Association’s ideal espresso profile—and blind taste tests proved listeners couldn’t tell the difference. In fact, filtered coffee drinkers even preferred the ultrasonic version. Support the show:Get a discount at https://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/4e504c9724e015b4