1, cold storage: low temperature can keep the freshness and quality of mushrooms. During storage and transportation, it is best to keep the temperature at 0 to 3 degrees Celsius and the relative humidity at 90% to 95%.

2. Quick-freezing: within 30 to 40 minutes, the mushrooms are cooled from normal temperature to minus 30 degrees to minus 40 degrees, the humidity in the center of the frozen mushrooms should be minus 20 degrees, and then frozen at minus 18 degrees, so that the original quality and flavor can be maintained for a long time.

3, salt water preservation: immediately put the cooked mushrooms into the salt solution, add a proper amount of refined salt after a few days, and continue to maintain the salt solution. After 4-6 days, when the aliquot, weight and pH value are stable, it can be sealed and kept fresh.

4. Soak in clear water: wash the fresh mushrooms, put them in a container, and pour in clear water to drown them. If the mushroom floats, you can press a heavy object. This method is suitable for short-term storage. Be careful not to use iron containers to avoid fresh mushrooms turning black.