2. When soaking the yuba, it is best to soak it in warm water, and add a little salt to the water, so that the yuba will be easily soaked, and the hardness will be uniform, and some places will not be soft and some places will be dry and hard. Dried yuba is very light. When it is soaked, there will always be a small part floating on the water, and some places can't be soaked. When it is soaked, cover it with a plate so that all yuba can be soaked in water, which can ensure that every place is soaked.