To make your own sourdough bread, you need to create an environment where wild yeast and bacteria want to hang out. Sam Wong explains how
Source:
https://www.newscientist.com/article/mg24532720-900-how-to-make-sourdough-bread-by-harnessing-wild-yeast-and-bacteria/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home