When identifying Tremella fuciformis, you can start from the following aspects

Look at the appearance

Color: High quality Tremella should be white or slightly yellow, with a natural color. If the color of Tremella fuciformis is too white, it may have been fumigated with sulfur. Although silver ear fumigated with sulfur looks good, it can pose a threat to human health when consumed.
Shape: Good Tremella fuciformis flowers have a complete shape, with tight earlobes and no broken or damaged parts. If the ear pieces of Tremella fuciformis are loose or broken, it may be due to prolonged storage time or poor quality.
Impurities: High quality Tremella fuciformis should not contain obvious impurities such as sediment, grass leaves, etc. When selecting, you can carefully observe the surface and interior of the silver ear to ensure that it is clean and free of impurities.

Smell the scent

A normal Tremella fuciformis should have a faint fragrance without any pungent odor. If Tremella fuciformis smells sour, moldy, or sulfur, it may have spoiled or been fumigated with sulfur.
You can place silver ear near your nose and gently smell it to feel if its scent is pure. If the odor is abnormal, avoid purchasing.

Touch the texture

The texture of high-quality Tremella fuciformis should be dry, brittle, and hard, and it will shatter with a gentle pinch by hand. If the Tremella fuciformis feels damp and soft to the touch, it indicates that the Tremella fuciformis has a high moisture content and may have deteriorated or be difficult to store.
You can touch the surface of the silver ear with your hand to feel if it is smooth. If there is stickiness or roughness on the surface of the silver ear, it may be due to poor quality or contamination.

Taste the taste
When purchasing Tremella, you can ask the merchant for a small piece of Tremella for tasting. High quality Tremella fuciformis has a smooth texture, some elasticity, and no odor. If the taste of Tremella fuciformis is rough, bitter, or has a strange odor, it indicates that the quality of Tremella fuciformis is poor.
When tasting, pay attention to the sweetness of Tremella fuciformis. If Tremella fuciformis is too sweet, it may be due to the addition of sweeteners such as saccharin.