Fairy grass, also known as fairy grass and bean jelly, is dried, decocted in water and cooked with rice slurry, and cooled to form a black jelly, which is called "fairy grass jelly". Nearly half of Mesona chinensis is carbohydrate, with cellulose content accounting for about 40%, protein and fat are not much, iron, calcium and manganese are high in minerals, and B vitamins are high in vitamins, in addition to polysaccharides, pigments (mainly anthocyanins), oleanolic acid, flavonoids and other components.

The three brothers in milk tea are pearl, fairy grass and pudding. These three ingredients can increase the taste of milk tea when drunk together with milk tea. Adding pearls, fairy grass and pudding to the basic milk tea, after fully stirring, will add Q-elastic and chewy pearls, soft sugar-coupled pudding and fresh fairy grass to the mellow milk tea, which will have an extremely rich taste and is a drink that many girls like very much.