What am I talking about? Don't you know? Why not? Our ancestors surely used zymergy all the time. It is a way to preserve food. And when done right tastes amazing!
Zymergy is fermenting food, you know like pickled herring, sauerkraut, pickles, etc.. I just spent 3 days making dill pickles, the new way :( by using vinegar, but I would like to learn to do it the old way.
My friend has just posted an amazing article on fermenting foods, with books to read in her article. Please go and check it out. Then use the library and read some great books :)