Youdunzi is a well-known street snack in Shanghai, also known as Youduanzi or Youduner. Youdunzi can be divided into two categories: meat and vegetables. The meat filling is made of meat, the vegetarian filling is also called shredded radish cake, and the sweet one is filled with red bean paste. Youdunzi tastes crispy on the outside, and the batter inside is a little soft and glutinous. With delicious fillings, it has a rich taste.