Sourd.io is like a fitness tracker for your sourdough starter

Baking sourdough can be a tricky business. Unlike other breads, where you can reliably use off-the-shelf dried yeast for a consistent result, sourdough uses a sourdough starter, which most people make themselves using a combination of flour and water. There are a ton of variables to getting it right, so why not use a DIY piece of tech to take some of the guesswork out?

That’s the aim of Sourd.Io, a DIY project put together by Twilio’s Christine Sunu. The device is designed to be installed into the top of a Ball jar, and it can measure the humidity and temperature of your starter and track its rise over time. That’s important because it should help you understand when your starter is at its most potent (aka, it’s reached the peak of its...

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