[Scheherazade]

It’s quite frightening that you’ve never heard of sourdough bread given your baking experience. And as the other replies allude to, it’s quite common historically and in other places. Are baking books edited to exclude that knowledge in America? It really brings to mind the possibility.

[joubert]

C’mon. http://www.bbc.com/travel/story/20200402-why-san-francisco-d...

[Damorian]

I've made sourdough a few times and all the recipes I tried require sugar.