Pot ash is an impurity left by firewood burning, which can be used to fertilize farmland and as a traditional Chinese medicine.

The role of boiler ash:

1, there are a lot of nutrients in boiler ash, so all the ash from farmers' homes is poured into the ground for fertilization.

2, the bottom ash has a strong antidiarrheal function. When I was a child, I ate indiscriminately and had diarrhea all the time, so I had no money to buy medicine. Grandma always uses the ash from the bottom of the pot as a folk prescription for me to eat, and it works quickly.