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Sweet potatoes are one of the many autumn foods grown in Japan (https://japanupclose.web-japan.org/culture/c20210924_4.html), and it is common for families to take a trip to a local farm to pick their own (https://japanupclose.web-japan.org/culture/c20201120_4.html). When the weather turns cold, one can hear the yaki-imo music playing from trucks throughout Japan. These compact trucks are equipped with wood-burning stoves in the cargo bed where the operator cooks and sells yaki-imo, or baked sweet potatoes. The piping hot potatoes are a popular treat, and are often eaten right out on the street, especially when the winter air is coldest.