Beijing onion, also known as green onion, is a common ingredient. It has a long history of planting, and it has been recorded as early as the Warring States period. There are many kinds of green onions in Beijing, among which Zhangqiu green onions in Shandong are the most famous. It is characterized by high, long, crisp, sweet, delicious taste and rich nutrition.

Beijing onion can not only be eaten as a vegetable, but also be used to cook various dishes. It can be used for cooking, stewing soup, cooking porridge, etc., and can increase the flavor and taste of dishes. In addition, Jingcong also has certain medicinal value, which can be used to treat cold, headache and other symptoms.