In Asia , nori ( 海苔 , Japan ) , zicai ( 紫菜 , China ) , and gim ( 김 , Korea ) are sheets of dried Porphyra used in soups or to wrap sushi .
In Asia , Zicai ( 紫菜 ) ( in China ) , gim ( in Korea ) and nori ( in Japan ) are sheets of dried Porphyra used in soups or to wrap sushi .