Researchers at UNSW Sydney have harnessed the power of ultrasonic sound waves to make espresso-strength coffee with room temperature water, cutting energy use by up to 75%.
probably can be done, but ultrasound irradiation itself will warm up coffee a little. if all of it goes to heat, then it’s extra 20C or so so you’ll have to cool it down afterwards anyway
Perfect for iced coffee though
Better. Perfect would be using chilled water. I’m on a limited connection right now so I can’t investigate, but I’m curious to know if they tested.
probably can be done, but ultrasound irradiation itself will warm up coffee a little. if all of it goes to heat, then it’s extra 20C or so so you’ll have to cool it down afterwards anyway