What is the scientific name of steamed flower roll fragrant bean?

Why do you say that the flower roll tastes unique? Because it is not the same as putting chopped green onion and spiced powder at home. The ingredients used are taken from a leguminous plant growing in the northwest border areas of Shaanxi, Gansu and Ningxia. After washing, drying and grinding, it can give off a strange and attractive fragrance. This kind of plant is generally planted in idle places such as fields, and most of them are planted by farmers themselves for their own use. It is sold in the market, but it is not common in large quantities. Buy some when you meet them and go home to process them yourself. They can be kept in the refrigerator for a long time without deterioration. I'm using this made by my mother. 10 years old, still very fragrant. The steamed flower rolls still exude attractive fragrance.