As part of Cooking Week, we set out to test some of the most niche (and, in some cases, ridiculous) kitchen gadgets we could find. We wanted to know if these impressive-looking appliances actually do what they claim and if they’re worth the splurge. These are our findings.

What if you could get a perfect glass of cold brew coffee in just a few minutes, without the hassle of steeping grounds overnight? That’s the basic pitch behind the Osma Pro, a quirky $695 gadget from designer Joey Roth. You may remember him as the guy behind those gorgeous ceramic speakers from over a decade ago — this time, he’s set his sights on something even more ambitious: Creating an entirely new form of coffee brewing.

Osma cold brew

Osma cold brew

The Osma Pro relies on acoustic cavitation, or a wave of continuous pressure that agitates grounds, to extract a smooth and mellow shot of coffee. It has the nuances you’d find in cold brew (something you lose with heat-based methods), but it also adds layers of complexity…



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