[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-ultrasonic-espresso-cuts-brewing-energy-by-up-to-75":10,"sections":42},{"siteName":4,"siteTagline":5,"publisherName":4,"contactEmail":6},"The Revision","Tech news, decoded.","editor@therevision.news",{"gaMeasurementId":8,"adsenseClientId":9},"G-ZW2MV82GYR","ca-pub-8533917693782264",{"article":11},{"id":12,"slug":13,"title":14,"dek":15,"body_md":16,"tags_json":17,"published_at":18,"created_at":19,"updated_at":20,"status":21,"review_note":22,"review_notes":23,"image_url":24,"persona_id":22,"persona_name":22,"section":25,"tags":26,"sources":31,"feedback":41,"feedback_at":22,"cost_usd":41,"total_tokens":41},661,"ultrasonic-espresso-cuts-brewing-energy-by-up-to-75","UNSW Researchers Brew Espresso With Sound, Not Heat","An ultrasonic method from UNSW Sydney extracts espresso at room temperature, cuts energy use by 75%, and fooled 100 blind tasters.","Researchers at UNSW Sydney built an espresso machine that replaces hot water with ultrasound — and a blind panel of 100 tasters couldn't tell the difference.\n\nThe team developed a process that pulses ultrasonic waves through room-temperature water and coffee grounds. The sound energy drives the same extraction that normally requires heat, pulling out oils, acids, and aromatic compounds without a heating element. Energy consumption drops by up to 75% compared to conventional machines. In blind tests, tasters could not reliably distinguish an ultrasonic shot from a hot-brewed one.\n\nEspresso machines are among the more power-hungry kitchen appliances — a typical home portafilter machine pulls 1,000 to 1,500 watts per brew cycle, and commercial units run harder. A 75% reduction without a detectable drop in cup quality is a real number, not a marketing rounding. Eliminating the boiler also removes warm-up time, which is its own quiet annoyance for anyone who brews before they're fully awake.\n\nThis is peer-reviewed research, not a product launch. No commercial ultrasonic espresso machine exists yet, and the gap between a university prototype and a kitchen appliance shelf is exactly where most promising coffee technology goes to quietly stall.","[\"coffee\",\"ultrasound\",\"energy efficiency\",\"food science\"]","2026-06-11T03:47:13.000Z","2026-06-11T04:22:50.379Z","2026-06-18T10:07:08.012Z","published",null,[],"https:\u002F\u002Fcdn.xyz.onl\u002Farticle-images\u002Fultrasonic-espresso-cuts-brewing-energy-by-up-to-75.webp","science",[27,28,29,30],"coffee","ultrasound","energy efficiency","food science",[32,35,38],{"name":33,"url":34},"Digital Trends","https:\u002F\u002Fwww.digitaltrends.com\u002Fcool-tech\u002Fradical-new-coffee-making-method-uses-sound-skips-hot-water-and-reduces-energy-bills\u002F",{"name":36,"url":37},"TechRadar","https:\u002F\u002Fwww.techradar.com\u002Fhome\u002Fcoffee-machines\u002Fwho-needs-hot-water-researchers-made-an-ultrasonic-espresso-machine-that-brews-coffee-without-heat-and-drinkers-couldnt-notice-any-difference",{"name":39,"url":40},"Wired","https:\u002F\u002Fwww.wired.com\u002Fstory\u002Fscientists-brew-espresso-with-ultrasonic-waves\u002F",0,{"sections":43},[44,49,54,59,64,69,74,79,83,88,93,98,103,108],{"name":45,"slug":46,"count":47,"latest_published_at":48},"AI","ai",2602,"2026-07-18T18:30:00.000Z",{"name":50,"slug":51,"count":52,"latest_published_at":53},"Security","security",315,"2026-07-17T19:30:00.000Z",{"name":55,"slug":56,"count":57,"latest_published_at":58},"Deals","deals",179,"2026-06-29T20:02:07.000Z",{"name":60,"slug":61,"count":62,"latest_published_at":63},"Policy","policy",169,"2026-07-17T19:49:53.000Z",{"name":65,"slug":66,"count":67,"latest_published_at":68},"Hardware","hardware",126,"2026-07-16T20:09:48.000Z",{"name":70,"slug":71,"count":72,"latest_published_at":73},"Consumer Tech","consumer-tech",94,"2026-07-16T16:29:46.000Z",{"name":75,"slug":76,"count":77,"latest_published_at":78},"Software","software",72,"2026-07-17T09:42:05.000Z",{"name":80,"slug":25,"count":81,"latest_published_at":82},"Science",66,"2026-07-10T10:29:37.000Z",{"name":84,"slug":85,"count":86,"latest_published_at":87},"Dev Tools","dev-tools",60,"2026-07-16T16:59:13.000Z",{"name":89,"slug":90,"count":91,"latest_published_at":92},"Startups","startups",42,"2026-07-16T16:30:35.000Z",{"name":94,"slug":95,"count":96,"latest_published_at":97},"Gaming","gaming",41,"2026-07-09T04:00:00.000Z",{"name":99,"slug":100,"count":101,"latest_published_at":102},"General","general",29,"2026-07-10T22:28:58.000Z",{"name":104,"slug":105,"count":106,"latest_published_at":107},"Reviews","reviews",20,"2026-06-24T12:00:01.000Z",{"name":109,"slug":110,"count":111,"latest_published_at":112},"How-To","how-to",6,"2026-06-16T09:00:00.000Z"]