I keep wondering how they ever refined beer, wine, and spirits...
(And CHEESE is an incredibly difficult thing to make! It must have started with sour milk...)
I grew up on a dairy farm and drank raw milk. Mother would keep a jar on the counter where she would collect what we didnt drink after meals. After a while it would sour and get chunky. Would use it to make sour milk pancakes. Imagine eating pancakes and biting into bits of feta cheese. Pastuerized milk wouldnt sour. It would spoil.
But yes, I have always wondered how they figured out how to make bread and the like.