1, first wash the sweet potato, peeled, with a paring knife will be sweet potato shaving;

2, shaving good, add water will be sweet potato starch kneaded, this step is repeated, the water is clear, no longer kneaded;

3, will be kneaded water filtered through a gauze, poured into a bucket, will be a half a day or a day of the water in the bucket to stand;

4, standing Half a day or a day later, the starch precipitation, the upper layer of the barrel is water, the lower layer is starch, the upper layer of water poured out;

5, will be starch and water and dilute, steamed for two hours, discoloration can be taken out;

6, take out of the skin of the powder into the cold water inside the soak, cooled down well after the powder cut into strips can be.