It seems to be an image metaphor. After it is made, it rolls in soybeans, as if the country really snowballs and raises dust, hence the name. Even the predecessors questioned this.
"Yan Dou's Miscellaneous Poems on Snacks" says: "Brown sugar and water stuffing are arranged skillfully, and yellow flour is buried in flour beans." Why is it called' snowballing'? It is almost humorous to call it that. He also said: "Soybeans and rice are glued together, steamed, wrapped in brown sugar and water, rolled into fried bean noodles and sold on plates. It is really incredible to call them' snowballs'. "
Origin: It is said that once, Empress Dowager Cixi was tired of eating food in the palace and wanted to try something new. So, the royal chef thought about it and decided to make a new dish with rice noodles wrapped in red bean paste.
As soon as the new dish was ready, a eunuch named Xiao Lv came to the chef. Who knows that Xiao Lv accidentally bumped into a newly cooked dish in a bowl filled with soybeans.
This is worrying the chef of imperial cuisine, and it's too late to do it again at this time. No way, the chef had to bite the bullet and present this dish to Empress Dowager Cixi.
As soon as Empress Dowager Cixi ate this new gadget and found it delicious, she asked the chef, "What's the name of this thing?" The cook thought it was all done by the eunuch named Xiao Lv, so he said to Empress Dowager Cixi, "This is called snowballing."