Red seaweed dried into thin, dark sheets, the same seaweed as Japanese nori. In Chinese cooking a little goes into soups, such as the broth served with wontons in Jiangsu and Zhejiang.
The seaweed wrapping Japanese sushi is called nori.
Tips
usage
紫菜 and 海苔 are often confused: both refer to dried laver seaweed, but 紫菜 is the traditional Chinese term used for soup and cooking, while 海苔 typically describes the seasoned, roasted snack sheets popularized by Japanese and Korean cuisine.