Agar is a polysaccharide extracted from seaweed, is currently one of the world's most widely used seaweed gum, non-toxic.

Agar, agar, scientific name agar, also known as the oceanic vegetables, Haidong vegetables, frozen powder, agar, stone flower gum, swallow vegetable essence, ocean powder, cold days, large vegetable silk, is a kind of plant glue, commonly used in the sea of the unicorn vegetable, stone flowers, red algae, etc., made of colorless, no 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.

Agar can be eaten by people in general, especially for obese patients, hypertension, high blood pressure and constipation.