Soft and elastic, the size in the same pot is roughly uniform, without umbrella opening mushroom, deformed mushroom, desmoped mushroom, spotted mushroom, pest infested mushroom, oxidized mushroom, hollow mushroom and thin skin mushroom not more than 10% whole mushroom, button mushroom: the diameter of the fungus is not more than 40 mm, the shape of the cap is complete, the section of the stipe is flat, the length of the whole mushroom stipe is not more than 8 mm, the length of the stipe is basically the same, and the stipe of button mushroom is flush with the cap.

Grading shall be carried out according to the specification requirements of processing cans, and the mushroom bodies that are not suitable for full packaging, such as cracked cap, deformed cap, open umbrella and uneven color, shall be picked out, and the diameter of about 1.5cm is the first grade mushroom; The diameter of about 2.5cm is the second grade mushroom; The diameter of about 3.5cm is the third grade mushroom; Those below 4.5cm can be used for processing sliced mushrooms, and those with a diameter of more than 4.5cm can be used for processing shredded mushrooms. The tinned iron cans or glass bottles shall be strictly inspected before being filled, and the unqualified empty cans shall be removed. Then wash it in hot water at 90-95 ℃, put it upside down on a clean shelf and drain it for standby.

The whole mushroom is light yellow, the sliced and fragmented mushrooms are light yellow or light grayish yellow, and the soup is clear. The thickness in the same tank is uniform, and a small amount of irregular chip box is allowed; Pieces of mushroom are irregular pieces or pieces.

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.