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A comment on I used sound waves to make espresso. It could cut coffee‑brewing energy use by ¾. Parent comment

Re:I used sound waves to make espresso. It could cut coffee‑... by PoorlyNamed on Friday June 19, 2026 @11:26PM (#48606079)
Huh. I never drink cold coffee so I always assumed they were one and the same. Thanks for the correction.
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