Sourdough Science Sourdough has been part of human history for over  5,000 years , yet it continues to surprise us. At the Sourdough Institute, we’re always exploring new questions—and this time, we asked: If you feed different sourdough starters the same flour, will they become more alike, or retain their unique character? To find out, we invited  seven professional bakers  and  eight passionate hobbyists  to take part in a bold experiment. The Setup Each baker received a ba