2, the crushed sweet potatoes with a cloth sieve out the residue, cloth placed under a large square wooden barrel to load the cloth leaking down the water; sieve well after the barrel will be static for 12 hours, the purpose is to let the sweet potato flour precipitation; 12 hours after the barrel is poured out, add an appropriate amount of clean water, the purpose is to remove impurities, so that the interval of a few hours to do this repeatedly.
3, then placed 1 day later, the water will be poured out, the sweet potato flour pieces fished out, wrapped in a hemisphere with the previous cloth, used to drip out the excess water.
4, until the hemispherical sweet potato is not dripping, has been relatively dry from the cloth out of the glass bottle squeezed into powder, dry it can be used to make vermicelli!
5, the sweet potato flour into the vat, add the right amount of hot water into a paste, and then use boiling water while stirring. About 18 minutes, the powder paste was transparent and uniform, easy to get out of the silk when it is powder. Add 0.5% alum in the powder, and then mix with wet starch, kneaded into no lumps, non-sticky, can pull the silk, uniform and delicate soft dough.
6, the adjusted dough into the funnel (set up in the water pot from the water surface of about 40 centimeters), and then evenly pat the dough, so that it is a strip from the funnel into the pot of water, meet the hot solidification that is into the vermicelli. The water is boiling but not boiling (the water temperature is maintained at about 97 ℃) to ensure that the vermicelli is not easy to break.
7, in the hot water pot placed next to a cold water tank, vermicelli molding from the hot water pot with long chopsticks clamped to the cold water tank, vermicelli cooled some fish out, wrapped around a bamboo pole into a bundle and put away.
8, and finally placed on the long bamboo poles, and wet vermicelli one by one after the separation of the sun in the sun (so that the vermicelli can be more quickly dry), the sun is big in the case of the sun 3-4 days can be fully dry, you can collect vermicelli bagged.