2. Steps: 100g potato starch and 60g cold water are mixed evenly. Stir while heating the water. Make a thick paste. Add potato starch to make dough. Roll it into thin slices. Cut into long strips. Cook in a pot. Cold water will do.

3. Wide vermicelli is a kind of vermicelli with a width of 0.7 to 3 cm, which is made of sweet potato as the main raw material by closed assembly line production technology. The wide vermicelli is even and transparent, which is not rotten after long cooking and has a smooth taste.