Agar, agar, the scientific name of agar, the English name (agar), also known as agar (agar-agar), Haidong vegetable, frozen powder, agar, stone flower gum, swallow vegetable essence, powder, cold days, large vegetable silk, is a kind of plant glue, commonly used in the sea of the unicorn cabbage, stone flowers, Gracilaria, etc., is made, for the colorless, non-fixed shape of the solid, soluble in hot water. It is widely used in the food industry and is also commonly used as a bacterial culture medium. Why called agar, mainly with Hainan's unicorn or stone cauliflower production out. The abbreviation of Hainan is Qiong.