over here in Africa chemicals are so used used in the food processing, except a tiny percentage as well.
I think boiling, fermenting like you said cooking as well too, because I think these too much chemical are also used to preserve food from spoilage
Next month I will start writing up some of my fermenting articles. I have a bunch of recipes that includes grain-especially corn, beans, bread, fruits, and vegetables.
Wow I will be looking forward to it as always