First of all, grey vegetables, as the name implies, are actually green. Sometimes the back of the leaves is red. But I think it is because the upper part of cabbage secretes a gray substance, so it is called cabbage. The seedlings and tender leaves of Grifola frondosa are edible, delicious, tender and nutritious. Eating gray vegetables can prevent anemia and have a certain impact on children's growth and development. Old people can also supplement calcium after eating it. No wonder the old people around are better than others. Therefore, as a kind of wild vegetable, grey vegetable has also become a necessary flavor health vegetable for hotels.
In fact, this is because, although Chinese cabbage is a kind of nutritious wild vegetable, it is a kind of light-sensitive vegetable, which is not suitable for everyone, especially for patients with solar dermatitis. This is because once Chinese cabbage is eaten, it is easy to cause solar dermatitis of plants, and the face, neck and arms are red and erythema is serious.
After eating gray vegetables, they are highly sensitive to light. After eating gray vegetables, the elderly in rural areas will advise them not to bask in the sun. In addition, it should be noted that grey vegetables can only be eaten after drying, blanching and cooking. Otherwise, it is easy to cause skin diseases, such as solar dermatitis. Interestingly, when the cabbage is used as a medicine to treat dental caries, it can treat skin diseases such as epilepsy or white phlegm.
But now the living standard is very good, and wild vegetables are good green food, especially for urban residents. At present, there is no artificial cultivation of grey vegetables, which are generally wild and have no human influence. This is really green food.