Two cooks check their bobos. [photo by Ju Chuanjiang]

"My bobo is good-looking and delicious. Lots of South Korea people like it," Sun said. Many South Korean bosses who open factories here will buy my flower bobo to take home."

"It is used in traditional craft and made by hand. It does not add any pigment and all raw materials are natural ingredients," Sun said, "making such bobo has to use Jiaodong's particular big steaming pot with diameter of more than 100 cm. It tastes very good!"

The color of bobo is made by different types of food. The pumpkin is used for the color yellow, spinach for green, purple sweet potato for purple. Black bean and red bean noodles both can be made to decorate the bobo.

"A local government delegation brought my bobo for state gifts when they visited South Korea. In 2013, my bobo was presented to the Taiwan panda baby," Sun said proudly.

Business people have found the cultural influence and business opportunity of "Wendeng flower bobo". Many restaurants use bobo to attract customers. Jiang Qingyuan, an inheritor of bobo, has participated in many food expos in Yantai, Qingdao, Ji'nan with his flower bobo.

Now, "Wendeng flower bobo" have also been put on the table of residents of many big cities including Beijing, Tianjin, Shanghai and Changchun.