Australian scientists have developed a method of brewing coffee by blasting ground beans with sound waves – and it produces a powerful cup "The ultrasonic method sends lots of tiny bubbles into the water and coffee. When they implode, they make mini shockwaves that can pierce the inside of the coffee grinds in a phenomenon called acoustic cavitation. According to Trujillo's 2020 research, this method extracts more flavour and caffeine from the coffee."

"We end up drinking three more samples, all made from different beans. They taste distinct – it's not the ultrasonic process we're tasting, but a more intense version of whatever is in the bean. By the end I find myself agreeing with Trujillo's description of the coffee: it has the "acidity and fruitiness of a filter coffee, with the body and the mouthfeel of an espresso but with less bitterness and a clean finish". After some refinement from the original large noisy prototype, the entire mechanism "fits neatly into an espresso machine."