Compendium of Materia Medica says: "Dig the old lotus root in winter, mash it into powder, dry it in the sun, slice it with a knife, and eat it as white as a crane feather. Mix well with cold water first, then rush in with boiling water, that is, it condenses like glue and is as lovely as ruby. Eating with icing can greatly nourish the stomach and produce fluid. "

"Life Taste Diet Spectrum" also said: "Old lotus root is mashed and soaked into powder, which is a wonderful product for postpartum, illness and aging."

It is not convenient to steam the lotus root starch cake alone. Generally, it is mixed with flour or rice flour and seasoned with white sugar and sweet-scented osmanthus or candied fruit. Specific practices can refer to water chestnut cake, yam cake and chestnut cake.