My own recipe, it’s delicious. The pressure cooker does not add water, does not add an air valve, and is used for dry baking. The heat can be higher at the beginning and the shaking interval can be larger. After a while, the heat can be reduced and the shaking interval can be reduced. Just wait until you hear more pops. It's delicious and simple, just like fried chestnuts, and the chestnuts will open on their own, no need to cut them first