Cold water, warm water and boiled water are all acceptable for vermicelli, but they are obviously different.

If you want the best taste, you should use cold water, that is, normal temperature water, but the speed of soaking hair is too slow, and the soaking time will be different according to different quality fans and different seasons, usually more than five or six hours, and it may be more than 12 hours if the weather is cold.

Sometimes we can use warm water or boiled water for urgent use, but try to use warm water, which can not only ensure the speed of foaming, but also ensure the taste as much as possible. If you use boiled water, it will foam quickly, but the taste is not good. Fans soaked in cold water can have a crisp taste, but those soaked in boiling water will only be soft and chewy.