After harvesting the mushrooms, remove the stalks with mud roots and immediately immerse them in clean water or 0.6% salt water. Mechanical injury shall be strictly prevented during picking and transportation; If it cannot be quickly transported back to the factory for processing within 3h after harvest, it must be soaked with 0.6% brine; Or use 0.03% sodium pyrosulfite solution to wash, soak and transport to prevent mushrooms from emerging. If the mushroom is soaked in 0.1% sodium pyrosulfite solution for 5-10 min in the production area, picked up and packed in a film bag, packed in a box, and transported back to the factory, it can be put into production only after 30 min of rinsing.

There are many kinds of mushrooms with rich nutrition, but after being processed into cans, they lack chewing power. When eating, they prefer the main food ingredients rather than separate dishes. Compared with mushrooms and carrots, they contain a variety of nutrients that they do not have. Moreover, carrots taste smooth and warm after heating, which can bring satisfaction to users when chewing staple foods. However, carrots are difficult to taste and have a single taste.