Soaking auricularia auricula in cold water takes a little longer, but it can make water gradually soak auricularia auricula. It can not only restore auricularia auricula to translucent state in the growth period, but also make auricularia auricula grow bigger and more.

Half a kilogram of dried fungus can make 4 kilograms of fungus, which tastes fresh and crisp. Soak auricularia auricula in cold water for about 4 hours. When the fungus looks translucent, it is weighed out and becomes heavier, indicating that it has been soaked.

It is not advisable to soak auricularia auricula in hot water (especially boiling water). If hot water is used, it will affect the quantity of pickled fungus and the quality of fungus.

Moreover, a kilogram of auricularia auricula can be changed into four kilograms by soaking in cold water, and only about five kilograms by soaking in hot water. Especially the auricularia auricula soaked in hot water has poor taste and soft entrance.

Quality classification of auricularia auricula;

Grade I: The ear pieces are dark brown with light sensation, and the back is gray. No boxing ears, flowing ears, lost ears, insect ears and moldy ears are allowed. The petals are intact and cannot pass through a sieve with a diameter of 2 cm. The water content shall not exceed 14%, the dry-wet ratio shall not exceed 1: 15, the thickness of the lug shall not exceed 1mm, and the impurities shall not exceed 0.3%.

Grade II: Dark brown ears and dark gray back. No punching ears, flowing ears, falling ears, moth-eaten ears and moldy ears are allowed. The petals are intact and cannot pass through a sieve with a diameter of 1cm. The water content shall not exceed 14%, the dry-wet ratio shall be above 1: 14, the thickness of the lug shall be above 0.7mm, and the impurity shall not exceed 0.5%.

Grade III: The luster of ear parts is mostly dark brown or light brown. The boxing ear shall not exceed 1%, and the flowing ear shall not exceed 0.5%. Ears that are broken, moth-eaten or moldy are not allowed. Each flower is too small or broken to pass through a sieve with a diameter of 0.4cm, the water content shall not exceed 14%, the dry-wet ratio shall not exceed 1: 12, and the impurities shall not exceed 1%.