Seaweed is seaweed. After the seaweed is roasted, the texture of the seaweed is crunchy and melts in your mouth, especially after the seasoning process, adding oil, salt and other seasonings, it will be transformed into a particularly delicious seaweed. The seaweed is concentrated in the seaweed in a variety of B vitamins, especially riboflavin and niacin content is very rich, there are a lot of vitamin A and vitamin E, as well as a small amount of vitamin C. Seaweed contains about 15% of the minerals, which are necessary to maintain normal physiological function of potassium, calcium, magnesium, phosphorus, iron, zinc, copper, manganese and so on.

Purple seaweed is a collective term for the mutualistic algae organisms in the sea, which can be eaten. Unlike most algae, nori is a multicellular organism visible to the naked eye. It typically lives on the seafloor tens of meters from the intertidal zone and is usually green in color, occasionally red.

Purple is often mistaken for a plant because of its ability to photosynthesize, but biologists generally agree that it is not a true plant because it has no real plumbing tissue, unlike water plants. In addition, there are several species of cyanobacteria associated with seaweed.