1, filter, filter with 0.7 to 1, 5m hanging pulp cloth, and filter twice. The first solution is diluted, the second concentrated filtrate is put into the tank for 2 days, then the water in the tank is drained, half of the original water is added and stirred, and then the filtrate is filtered once and deposited in a small tank;

2. Exposure: after the tank body is completely clarified, drain the water, take out the surface oil powder, take out the lower starch, hang it into a powder pile, and expose it to the threshing floor. When half of the water in the powder pile evaporates, the powder pile is cut into several parts and exposed to the sun;

3. Mix 2500 to 3000 grams of paste, starch and alum with cold water and put them in a basin. Put the basin into the pot, and boil the continuously stirred paste;

4, silk leakage, starch paste is too thin, should be mixed with dry starch and then knead, so that the surface toughness is moderate, it is advisable to mix powder once before silk leakage. The temperature of the dough is 30 to 42 degrees Celsius, and the colander of the cold water tank is of medium size with 48 holes. In case of silk leakage, the paste should be stirred evenly, and warm water should be added while stirring;

5. Drying the silk, taking the vermicelli to the leeward and sunny place, drying and packaging to obtain the finished product.