Shanghai wontons are a traditional Shanghai snack, usually made of thin skin and meat filling, cooked and served. Here are some famous places and restaurants for Shanghai wontons:

1. Shen Dacheng Wontons: Shen Dacheng Wontons is a famous old wonton store in Shanghai, located on the pedestrian street of Nanjing East Road in Huangpu District. The store's wontons are delicious, smooth and popular among diners.

2. Old Wharf Wontons: Old Wharf Wontons is one of the famous wonton stores in Shanghai, which is located in Linping Road, Hongkou District. The store's wontons are tasty, with rich fillings and strong flavors, and are very popular among diners.

3. Freshly Done Wontons: Freshly Done Wontons is one of the famous wonton stores in Shanghai, located in Jinshajiang Road, Putuo District. The store's wontons have fresh fillings, smooth texture and delicious flavor, and are very popular among diners.

4. Hongtaiyuan Wontons: Hongtaiyuan Wontons is one of the famous wonton stores in Shanghai, located in Wuning South Road, Jing'an District. The store's wontons are tasty, richly filled and full of flavor, and are very popular among diners.

5. Ajisen Ramen: Ajisen Ramen is one of the famous restaurant chains in Shanghai, offering a variety of delicious wontons. The restaurant's wontons are tasty, richly filled and full of flavor, and are very popular among diners.

The above are some of the famous sources and restaurants of wontons in Shanghai for your reference.