Every year in the fall of the village people gradually digging sweet potatoes, but every family has a kind of sweet potatoes, planted and more, more farmers to eat leftover. There is no area at home to put,so it is made from sweet potatoes into tapioca starch, not only delicious and convenient storage. The first step: choose. Sweet potatoes from the field dug home after the first clean up the surface of the soil, the sweet potatoes will be cleaned up to remove the bad sweet potatoes and residue. The whole process is all pure labor picking, the best choice of red skin and white heart sweet potatoes, as large as possible to pick some of the pieces. Step 1: Selection. After digging sweet potatoes home from the field, first clean and tidy the surface soil, clean and tidy the sweet potatoes to remove bad sweet potatoes and residues. The whole process is all pure labor picking, it is best to choose red skin and white heart sweet potatoes, the block head as much as possible to pick some big. Step 2: Crushing. Selected sweet potatoes with a crusher, and then use a clean basin or bucket to crushed sweet potatoes down. Connect the tap to add water, not too thick.

If you need a lot of sweet potato flour, you have to crush a lot of raw sweet potatoes. Usually 10 pounds of sweet potatoes can appear less than 1 pound of texture. This is based on the category and quality of sweet potatoes to determine, the best sweet potatoes are red skin and white heart sweet potatoes, this type of sweet potatoes to produce a higher amount of flour. Step 3: Filter. The water and sweet potato residue mixed material poured into the filter press filter cloth to carry out filtration, once can not pour too much, a bucket can be, a person pouring into the sweet potatoes, a person undertake to shake the filter frame to carry out filtration. Filter out the sweet potato residue and then add water to carry out the second filtration, general filtering 2 times is enough. Until the filter press cloth in the broken sweet potato are sweet potato residue, the sweet potato residue fishing out with a vessel can be fed to livestock. Filter press filter cloth under the prepared vat, used to receive after filtering sketch mixed substances. After the initial powder passes the water solubility, after filtering with more than 1000 mesh ground cotton cloth, only then can we do the accurate fans of taking grade.

Usually, because of the kind and soil environment harm, must 4 to 5 pounds of sweet potatoes can produce and process one pound of initial powder, and then produce into accurate fan is only 9 two. Exposure starch. When the water in the pool has no turbid condition, that is, after all responses, drain the top layer of fermentation liquid. Shed starch deposits layer surface oil powder, the next layer of starch removed hanging into the powder weight (i.e., powder dough), moved to the sun field exposure. When half of the water in the powder evaporated, and then cut the powder into a number of parts, to carry out exposure. The drying area is built in the downwind and sunrise area to prevent dust and environmental pollution. Battering. This process is important to determine the quality of the fans. According to each 500 grams of starch plus 25 grams of Ming Gong, 2.5-3Kg of cool water and mix, and then put people in the pot to boil, and constantly mix, the life cycle up to 8-9 into that (produce gray starch). Make the batter, can be on other starch, mixing into the appropriate soft batter.

Leak silk and refrigeration. Leakage of silk before the preparation of several pots (model specifications for 8), cold water tank several and small and medium-sized 48-hole leakage spoon. Because the sweet potato vermicelli thicker, leakage spoon holes than other fans leakage spoon slightly larger. Funnel silk, the batter should be sufficient to mix well, while stirring and adding warm water, the temperature of the water is 50 ° C up and down. Hand hand a ball of powder paste, let it certainly widen and slide, such as not broken, indicating that the viscosity is appropriate, can gradually leak silk. Prepare a pot of boiling water, continue to make up into the leaky pot when the leaky pot inside the water nearly boiled to carry out the leakage of silk, so that the powder ball through the leaky spoon hole vulgar, slowly increasing narrow, into fans. The fans sink into the bottom of the pot ash, and then exposed to the water surface, and then fished up, put into the cold water tank to reduce the temperature, take the hand combing the whole bunch, through the wooden frame, and then through another cold water tank again refrigeration, and continue to shake until the fans are loosened the whole line, and then put into the room, cold, and then take out of the outdoor sunshine silk.