Triangle dam has a long history. Which city's specialty snack is it?

Chongqing characteristic triangle bus is a popular local cuisine in Chongqing, and it is one of the three classic traditional cuisines in Chongqing. It has a long history, is the representative of local cuisine, and belongs to the classic traditional snacks with Han characteristics. It is one of the classic traditional breakfasts of Chongqing people. Triangle bar is an upgraded version of Paoba, which is made of rice as the main raw material and then fried and baked in a professional pan. Suitable for men, women and children. Triangle dam is named after its right triangle shape, which is more delicious when freshly baked! It is a wonderful childhood memory of several generations.