Nori seaweed are dried and roasted seaweed, from the red seaweed Porphyra. They can be used straight from the package as a snack, for sushi, or as a seasoning for various pasta dishes, wraps, etc. Ideal for seaweed soup and rice balls. Seaweed is a rich natural source of minerals, trace elements, and rare earths. They contain high concentrations of calcium, sodium, potassium, iron, and magnesium, and are rich in vitamin A.