This is a kind of food in Tai Po, Meizhou, which is called Gaoban in Hakka. How do you say it in Mandarin? And briefly describe the practice and materials. Thank you very much.

It belongs to a kind of hair cake, and Tai Po is also called laughing board or cup version, and its production process is complicated. Generally, every family will make some during the Chinese New Year. First grind the rice into powder, then mix it with water, pour it into a special cup, and add baking powder (it is said that you must laugh when you make it, and the board you make will laugh).