Something that has always puzzled me:
Wine discovery is fairly simple, fruit juices ferment when left in containers and produce alcohol.
But BEER is a complicated process and must be studied and experimented with.
The basics of beer would be pretty simple.
4 ingredients.
I can see water getting into some grain storage, airborne yeast getting the process started, and someone deciding to try adding hops to the mix when the fizzy intoxicating liquid was discovered.
What baffles me is: who would decide “oh look, some water got in my grain and now it’s all fizzy and smells weird - hey, I know, I’LL DRINK IT!” and proceeded to in enough quantity to get past the odd taste and reach inebriation, and did so often enough to decide it’s a good idea.
I suspect that the deiscovery of bread (similarly complicated) is related.