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The Sourdough Library

At The Sourdough Institute, our mission is deeply rooted in the tradition of sourdough baking. We’re dedicated to preserving this ancient craft, ensuring it thrives for generations to come. Our efforts are showcased through our most cherished project, the world-renowned Sourdough Library—the heart of our commitment to protect the rich diversity of sourdough.

Would you like to assist us in feeding our sourdough starters?

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Preserving Sourdough Diversity

Our Sourdough Library is a vital part of what we do. It’s not just a collection; it’s a living testament to the variety and richness of sourdough cultures from around the globe. This unique library serves as a beacon of our dedication, safeguarding these precious traditions and knowledge for future bakers and enthusiasts.

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Driven by science

Behind the scenes, our commitment to preserving each sourdough culture is supported by rigorous scientific research. In collaboration with experts, we analyze and catalog each culture to ensure its preservation and understanding. This careful attention to detail lays the groundwork for future innovations in sourdough baking.

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A global treasure

Imagine a place where every culture has a story, representing traditions from every corner of the world. That's the essence of our Sourdough Library. By bringing together unique sourdough cultures, we’re creating a global hub that celebrates the art of sourdough baking in all its forms.
 

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The Quest for Sourdough

Quest for Sourdough is an online library that allows sourdough enthusiasts worldwide to upload their sourdough and compare the differences between them. With nearly 3000 sourdoughs in our collection, we can gain a better understanding of the science behind them discover unique ones to add to our library. 

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Collaboration 

The strength of our library lies in the collective effort of bakers worldwide who share our passion. Each contribution enriches our collection, bridging distances and uniting us through the universal language of sourdough. It’s a powerful reminder of how connected we are in our shared dedication to this craft.

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The Quest for Sourdough
Movies

Karl De Smedt, our sourdough librarian, has traveled far and wide to collect sourdough and learn about different cultures. You can watch adventures on Puratos' YouTube channel.

We also have a virtual library where you can discover all the unique sourdoughs we have today!

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Visit the virtual library

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