Preparation method of nine-process donkey-hide gelatin and rhizoma polygonati cake

The invention provides a preparation method of nine-processing donkey-hide gelatin and rhizoma polygonati cakes, and belongs to the technical field of health-care foods. Rhizoma polygonati processing: washing rhizoma polygonati, removing stigma, slicing, drying in the sun, adding a proper amount of yellow wine, soaking rhizoma polygonati for more than 12 hours, fishing out, drying in the sun, repeatedly soaking and drying in the sun for several times, completing processing, and collecting a yellow wine soaking solution; processing auxiliary materials: putting the black sesame, the walnuts and the pitted jujubes into an oven, baking for 1.8-2.5 hours with slow fire until the black sesame, the walnuts and the pitted jujubes are crisp, and mashing and uniformly mixing for later use; colla corii asini melting: soaking colla corii asini and rock candy in the yellow wine soaking solution for 48-72 hours, stirring for multiple times during the period until the colla corii asini and rock candy are dissolved in the ye