Erduoyan fried cake originated in Guangxu period in the late Qing Dynasty (1900). Liu Wanchun (1874- 1962), the first generation shopkeeper, went from pushing an ostrich cart all over the street to setting up a stall on the street outside the north gate of the west exit of Yuyi Street. After accumulating some capital, he partnered with his nephew Zhang in the north gate. Liu Wanchun's fried cakes have fine ingredients, fine workmanship, delicious taste and low price. Outstanding among many fried cakes, it is unique, and its business is booming, winning the reputation of "Fried Cake Liu", and because the fried cake shop is close to the dye house, pawn shop, bank, cloth shop, shoes and hats shop on Appraisal Street and Shenzhen Street. Rich people have birthdays, and ordinary people have birthdays. With the homonym of the word "cake", Liu Ji's fried cake shop made an appointment to buy fried cakes in advance, and the business was booming. Because the fried cake shop is close to a narrow alley-Erduoyan Hutong, which is only 1 m wide, people humorously call it Erduoyan. Although it was renamed as "Zengshengcheng" during the Japanese puppet regime, Erduoyan Fried Cake Shop became more and more famous. Fried cakes are also called "fried cakes with pierced ears".

The traditional ear-pierced fried cake is made of yellow rice and glutinous rice produced in Yangcun, Hexi, Wen 'an and Baxian counties along the North Canal, soaked in water, ground into porridge with a stone mill and put into a cloth bag. Ferment with water and mix with alkali to make dough; Then use vermilion red beans produced in Tianjin to make bean paste stuffing, add high-quality brown sugar, cook in a pot, and stir-fry into bean paste stuffing. After cooling, make stuffing, wrap it in hot oil (130℃) and put it in the pot. The fried cake is golden in color, "prickly" in color, crispy in skin and tender in meat, soft and waxy inside, and sweet and refreshing in bean paste filling. 1987 Tianjin Stars Cup Tianjin Food Competition won the special honor award. 1989 was approved by the Ministry of Commerce as a high-quality food and won the Jinding Award, and won the gold medal in Tianjin catering industry for many years. 1997 was named as a famous Chinese snack by China Cuisine Association.