Seaweed is made from laver. After the laver is cooked, the texture is crisp and tender, and it melts in the mouth. Especially after seasoning, with seasonings such as oil and salt, it becomes a particularly delicious "seaweed". Seaweed concentrates all kinds of B vitamins in laver, especially riboflavin and nicotinic acid, as well as many vitamins A and E and a small amount of vitamin C. Seaweed contains about 15% minerals, including potassium, calcium, magnesium, phosphorus, iron, zinc, copper and manganese. This is necessary to maintain normal physiological functions, especially selenium and iodine.

Seaweed is laver; But laver is not all seaweed. Rhodophyta, Rhodophyta. Algae are purple or red, composed of single or double layers of cells, and are leaflike, heart-shaped and banded. The false root fixator at the lower part of laver is attached to the rock. The height can reach 20-30 cm. The process of androgyny and reproduction is complicated. 1955, scientists in China made clear the life history of laver for the first time, which consists of three stages: laver, filamentous and laver.