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Content: There are many  more types of sushi that use nori. If  you have ever eaten sushi at a restaurant that is wrapped in seaweed, you have  eaten nori. Onigiri, or  rice balls, also use nori sheets. Onigiri is similar to sushi except that it does not use vinegar. It is often in triangle or oval shapes,  filled with rice and other ingredients, and wrapped in nori sheets. Nori is  also often used in noodle dishes and soup as a garnish and it can even be  bought toasted and flavored. Not only is  nori delicious to eat, but according to scientists, it is healthy to eat,  too! Nori is high in fiber, protein,  minerals, and vitamins. It is high in  calcium, zinc, and lignans, which is said to help reduce the risk of  cancer. It also contains iodine and is  low in fat.