Mushrooms stored in cans shall be fresh and unopened mushrooms with a diameter of 20-40mm. During the whole process of mushroom collection, transportation and processing, the exposure time must be minimized, and the faster the processing process, the better. The mushroom shall be strictly prevented from contacting with iron, copper and other metals, and shall not be immersed in color protecting liquid or water for a long time.

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.