Stop guessing when you're ready to bake! Breadwinner takes the guessing out of gluten by alerting you when your sourdough starter is at its peak.

Sourdough starters are mysterious colonies of microbes evolved to help humans bake the tastiest bread on earth. But starters can be stubborn and mercurial. We set out to solve this with Breadwinner. Breadwinner knows when your sourdough starter is bake...

This officially licensed Backerkit-Exclusive Centennial Edition features wrap-around cover artwork by Joshua Werner celebrating the upcoming 100th anniversary and features extensive bonus content.