2, yuba is a bean product, bean products are easy to deteriorate and rot, and it is more difficult to preserve without putting it in the refrigerator.

3. It is recommended to soak in warm water for 4 hours to achieve edible softness. If it is cold water, it will take about 10 hour, and the effect of changing water is better.

We have done experiments, and the foaming time can't exceed 72 hours. If it exceeds 72 hours, it will completely deteriorate and be completely inedible. Because it takes too long, the colonies in the water will multiply and pollute the ingredients.