It is also called Salsola salsola and Salsola salsola. You should learn how to choose it when you buy it. Real Salsola salsola is gray-black, light yellow after soaking, and it will sink quickly when put in water, while fake Salsola salsola is dark brown or dark black and green brown, blue-black after soaking, and it will sink slowly.
It is a vegetable in summer and autumn, and generally grows in Inner Mongolia Autonomous Region, Ningxia Hui Autonomous Region, Gansu, Qinghai and other regions. Nostoc flagelliforme is a common vegetable, because it looks like hair, thin and long, so it has been vividly turned into Nostoc flagelliforme.
Selection method of Nostoc flagelliforme
1, color: observed by naked eyes, the color of Nostoc flagelliforme is gray; The color of wig dishes is black, dark brown or green brown.
2. Shape: Nostoc flagelliforme is a fine and uniform cylindrical filamentous body covered with hyaline; Wig vegetables generally have no transparent colloid, and some of them are filiform and colloid, but they are branched with thick bottom and thin top.
3, texture: the fingers of the real hair vegetable are softer and not fragile; And some wig dishes are fragile.
4. Soaking: Nostoc flagelliforme sinks rapidly in water and turns pale yellow after soaking; Wig vegetables sink slowly, and some soaking liquids are blue and black.
5, taste: real hair vegetables have a fragrance and a crisp feeling; Wig vegetables have no smell of Nostoc flagelliforme.