I got my hands on what is supposedly the Ancient Egyptian sourdough culture that made some headlines a few years ago. On the left is the culture in white flour and on the right is emmer flour I've milled myself. I'm gonna build these up and make some bread and of course some of it will get into a beer at some point.
https://www.atlasobscura.com/articles/what-bread-did-ancient-egyptians-eat











