Tremella: after soaking high-quality pearl tremella in warm water, its volume can expand rapidly by 5~6 times, and those who fail to reach this ratio are not good products; If it is found that it is scattered after soaking in warm water, it means that it is bonded with broken white fungus.

Identification of the quality of tremella fuciformis, also known as tremella fuciformis and auricularia auricula, contains a variety of nutrients and colloidal components. Because of its beautiful shape, elegant color and high nutritional and nourishing value, it has always been regarded as a delicacy on the table and a wonderful product for health care.

According to the quality, tremella can be divided into five grades, and the sensory identification method is as follows:

look

First-class products: the ear pieces are bright and white with only yellowish luster, the flowers are generally light and loose, the meat is thick, tough and elastic, and the pedicel head has no ears, feet, black spots and impurities. After the dry ear is soaked in water, the expansion rate can reach more than 15 times.

Second-class products: the ears are white and slightly beige, the flowers are generally loose and shiny, the meat is thick and elastic, the small flowers should not exceed10%-115%, and the pedicel is slightly with ears and feet. After soaking in water, the expansion rate of auricularia auricula is more than 12 times.

Third-class products: the ears are white with beige color, the flowers are complete and free of impurities, the meat quality is slightly thin, the small flowers should not exceed 20%-25%, the pedicel head is slightly ear and foot, and there is no stiff block. After the dry ear is soaked in water, the expansion rate is more than 10 times.

Grade IV: Ear tabs are beige in color, slightly yellow, slightly spotted, with different flower shapes, but still intact, with thin meat, pedicels with ears and feet, slightly stiff, etc. After the dry ear is soaked in water, the expansion rate should be not less than 8 times.

Off-grade: Ears are yellow or brown, not bright, with different flower shapes, stiff knots, unclean pedicels, black spots and watery spots, rotten ears, impurities, etc., with low inflation rate. Although this kind of tremella is edible, it should be cleaned before eating, such as stiff blocks, rotten ears, impurities, etc., and thoroughly washed with clear water to remove odor, and then soaked for cooking. Because of the poor quality, it is often hard and not cool to eat, and it is not thick soup, and the flavor is inferior.

Erwen

Fresh tremella should be free of acid, odor and peculiar smell. Old tremella stored for a long time will not only turn yellow in color, but also have sour gas or other unpleasant odor due to the denaturation of protein and fat components. If the tremella has a musty smell, it means that it has been damp and moldy. Mildly moldy tremella should be dried and the moldy part removed, and it can still be eaten; Seriously moldy and deteriorated, it is not suitable for food. Tremella has a burnt taste, most of which is caused by excessive drying of fresh tremella during processing and dehydration. Although it is edible, its quality and flavor are poor.

Sanchang

Some people, when buying tremella, think that the whiter the color, the better the quality, but they often get cheated. Because tremella can be smoked with sulfur to remove yellow, making people look white; However, the storage time is a little longer, and after10-20 days, it will be oxidized and reduced to the original yellow due to contact with air. Tremella itself should be tasteless, and it is advisable to try it a little when purchasing. If it has a stimulating or spicy feeling on the tongue, it can be proved that this tremella is smoked with sulfur and made fake.