1, chestnuts with shells can be cooked in a few minutes: if chestnuts with shells are cooked in cold water, they should be cooked with high fire 15 minutes, and then cooked with low fire 15 minutes or so, so they must be cooked.

2. You can also cook chestnuts in a pressure cooker. If you choose to cook chestnuts in a pressure cooker, the time will be shorter, and you can cook chestnuts in about 30 to 40 minutes.