The invention discloses puffed hollow purple sweet potato chips. The puffed hollow purple sweet potato chips comprise raw materials including the following components in parts by weight: 50-55 parts of whole sweet potato
chip flour, 30-35 parts of distarch
phosphate, 15-20 parts of
potato starch, 3-7 parts of white granulated
sugar, 1.8-2.5 parts of table salt, 1.5-2.0 parts of
sodium glutamate and water which accounts for 20-24% of the total
mass of the raw materials. The puffed hollow purple sweet potato chips are prepared through the following processes:
raw material treatment, batching, mixing,
extrusion forming, baking, deep-frying and puffing,
seasoning and the like. According to the puffed hollow purple sweet potato chips disclosed by the invention, the whole sweet potato
chip flour is adopted as a main
raw material, the proportion of each material and the
water content of a mixed material are reasonably allocated, and a cold
extrusion forming process is adopted; and a produced hollow purple sweet potato
chip product is unique in shape, attractive in color and luster, crisp in taste, aromatic in potato
flavor and high in nutritive value, has a health function, and can play certain roles of enhancing the body
immunity, preventing cardiovascular diseases, reducing hepatosis, resisting
cancer, and preventing the occurrence of gastrointestinal diseases. And meanwhile, the preparation method disclosed by the invention is simple and easy to operate.