The coffee connoisseurs in the crowd are probably familiar with the popcorn popper method of roasting your own beans. But anyone who’s tried it has probably found the hot-potato method of transferring the roasted beans back and forth between two colanders, to arrest the roasting process, a little… inelegant. On Evil Mad Scientist, Windell shows how he turned an air popper into a cooler for cooling the beans down after they’ve come out of the roaster. And no, unfortunately, the same air popper cannot be used to for both the roasting and the cooling. You need two air poppers.

Roasting coffee at home: a DIY coffee bean cooler

Check out all the coffee coverage on MAKE

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.

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