The invention discloses a nutritive duck egg and purple sweet potato cake. The nutritive duck egg and purple sweet potato cake is made from the following raw materials in parts by weight: 102-104 parts of purple sweet potatoes, 25-27 parts of glutinous
rice flour, 20-22 parts of sweet potato leaves, 31-33 parts of salted duck eggs, 11-13 parts of
lotus roots, 7-9 parts of lactosyl fructoside, 0.2-0.4 part of spice and 0.2-0.4 part of compound enzymes. The nutritive duck egg and purple sweet potato cake provided by the invention is rich in
nutrition, bright in color, clear in layering, rich in fragrance and moderate in salty and sweet degree, the sweet and greasy mouth feel of a conventional purple sweet potato cake is changed, a way for
deep processing of the purple sweet potatoes is increased, and economic incomes are increased by 12.3%; the purple sweet potatoes at an outer layer are claret-
colored, and the dried
egg white powder of the salted duck eggs and spice
powder are added, so that the nutritive duck egg and purple sweet potato cake is moderate in salty and sweet degree, rich in raw materials, rich in fragrance, fine, smooth, mushy and soft; the glutinous rice and
lotus roots at a middle layer are reseda-
colored, delicately-fragrant, fine, smooth, soft, chewy and crisp; an inner layer is golden, salty, fragrant and delicious, and rich in
nutrition; and the nutritive duck egg and purple sweet potato cake adopts a three-layer structure from outside to inside, has three kinds of mouth feel, and meets requirements of consumers on
nutrition and mouth feel.