People all over the world keep sourdough starters – and over 500 have shared theirs with us, as part of the global citizen science Sourdough Project. Now that we know which microbes make your starters unique, we have a new challenge for you: we’d like you all to bake the exact same recipe, and send us a picture of the result. Because you’ll all be baking from the same recipe, any differences in the bubbles or crumb will be directly attributed to the microbes in your specific starter. “Share the loaf”, and help us to solve the mystery of bread!