If the germ theory is relatively new, how do they think fermentation was happening (like wine, ale, yogurt etc.) thousands of years ago?

Question

If the germ theory is relatively new, how do they think fermentation was happening (like wine, ale, yogurt etc.) thousands of years ago?

In: 613

Answer 1

Extra credits channel on yt just did a series on history of beer and touches on that [subject](https://youtu.be/KJsWaJVtZWA). Like all things food related discoveries: coincidence and it didn’t kill them.