Egg, bean curd stick, also called bean curd, etc., is a kind of very popular domestic traditional foods, bean curd stick originated in the tang dynasty, has a history of more than one thousand years ago, "compendium of materia medica" records, the soymilk heating surface will appear after a layer of film, the film after take out and dried bean curd stick can be, and its color is light, rich in nutritional value more.