Bawan

Bah-oân is a Taiwanese street food. The term "ba-wan" is a non-standard romanization derived from Taiwanese Hokkien. In the township of Lukang, Changhua County, ba-wan are known as bahhoe (肉回; ròuhuí; bah-hôe; 'meat return') because they take on the block-like shape of the character 回. It is believed that ba-wan were first prepared in the Beidou township of Changhua County by a scribe by the name of Fan Wan-chu (范萬居; Fàn Wànjū) as food for disaster relief, when the region was struck by heavy floods in 1898. Since then, ba-wan has spread to different regions of Taiwan and is now considered by many as a national food, and can be found in most night markets in Taiwan. The traditional wrapper was made with sweet potato starch alone, sweet potatoes were the dominant food crop in pre-1950s Taiwan and were traditionally preserved by extracting their starch. The ingredients of the ba-wan reflect the terroir of Taiwan.

Source: Wikipedia