Bread making, particularly sourdough bread making, has become a trend for people looking for ways to pass time in lockdown. For Karl De Smedt, it’s his livelihood. He’s the world’s only sourdough librarian at the Puratos Center For Bread Flavor in Belgium, where he collects and cares for sourdough starters from all over the globe. The World’s host Marco Werman speaks to De Smedt.
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