'Roasted sweet potato' is a beloved street food in China, especially during autumn and winter. The word combines three characters: 烤 (kǎo) means 'to roast' or 'to bake', 红 (hóng) means 'red', referring to the common reddish-orange skin and flesh of the sweet potato, and 薯 (shǔ) means 'tuber' or 'potato'—specifically denoting sweet potatoes (not regular potatoes, which are 土豆). Together, they describe a whole sweet potato roasted over charcoal or in an oven until tender and caramelized.

This snack is often sold by vendors on city streets from large metal drums or ovens, emitting a warm, sweet aroma. It’s associated with comfort, nostalgia, and seasonal change. While 'sweet potato' alone is usually 红薯 (hóngshǔ), adding 烤 specifies the cooking method—and this preparation is so culturally iconic that 烤红薯 often evokes the experience itself: warmth, simplicity, and homestyle flavor.