Since it was a small sweet potato, it only took about 10 minutes to cook. In Japan, it is customary to eat these sweet potatoes in the fall. Thank you.
@Camp numao Enjoy your meal Eugen Schatz would be delighted to see that one of his lanterns is still being maintained and used in faraway Japan.
@Reinhard You're absolutely right. He probably never imagined that someone would use this lantern to roast sweet potatoes and take a commemorative photo. @MYN Sweet potatoes roasted over a lantern flame are surprisingly delicious too. Haha.