The invention relates to the technical field of
food processing, in particular to a freeze-dried Chinese yam biscuit and a preparation method thereof. The freeze-dried Chinese yam biscuit which is low in GI, good in
flavor and crispy in texture is developed by screening the formula and considering the texture and
flavor, and the freeze-dried pure raw Chinese yam biscuit has the problems that the structure is loose, the freeze-dried pure raw Chinese yam biscuit is prone to breakage under external force and adheres to teeth in the mouth, and the freeze-dried pure raw Chinese yam biscuit has the
powder paste taste, the raw Chinese yam taste and the like. On the basis of maintaining the nutritional ingredients of the raw materials to the greatest extent, the freeze-dried biscuits are excellent in
flavor, crisp in taste and friendly to diabetics, the defects that in the production process, products fall off residues, adhere to teeth, are heavy in raw taste and the like are overcome, meanwhile, the process is optimized,
energy consumption is reduced to the minimum, and the problem that freeze-dried products are high in
energy consumption is solved. The formula comprises the following components in parts by weight: 440 to 460 parts of common yam
rhizome, 50 to 70 parts of henry
steudnera tuber, 110 to 130 parts of milk, 10 to 15 parts of
crystalline fructose, 8 to 12 parts of konjak, 15 to 25 parts of sesame and 0.5 to 1.0 part of
theanine.