Prepare fresh sweet potatoes, peel them, wash them and cut them into small pieces. Use a soymilk machine to grind them into a pulp. If the first grinding is rough, grind them a second time.
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Add some water to the polished sweet potato pulp, filter it once with cotton cloth, put it in a container, and put it in the refrigerator for 1 day. Do not shake it. Because the sweet potato starch needs to be precipitated.
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After standing for 1 day, the sweet potato flour has precipitated. Remove the top layer of water, and the lower layer is sweet potato flour.
Put it away Add a little water to the sweet potato flour and stir evenly, not too much water, just a little bit, and stir into a paste. When stirring, you can add some starch that is usually used for cooking. The sweet potato starch produced in this way will taste better.
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Pour the mixed sweet potato flour into a flat-bottomed dish, just a thin layer, then put it into a pot and steam it with cold water When the sweet potato flour becomes transparent, it's ready.
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Take out the steamed sweet potato flour, soak it in cold water for five minutes, and cool it down. Cut the sweet potato flour into long strips, and the pure natural sweet potato flour is ready
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