In Shantung there's a sweet dish called pa-szu hsiang-chiao [hot candied banana]. There's no reason for all the mystification, because bananas are sweet already without adding sugar.
山東甜菜裡有拔絲香蕉，拆穿西洋鏡，毫無道理，因為香蕉已經很甜，不用再加糖了。