Wakame Seaweed. Wakame is seaweed that is often found in dried form as opposed to fresh and salt preserved, especially outside Japan. Hydrate it in water for 10 minutes, and it is ready to use. ... Wakame has mild flavor and soft texture. It is commonly used in Miso Soup and Sunomono. Among seaweeds, wakame contains a comparatively high amount of calcium, and is said to be effective as a remedy for constipation and to make hair shiny. Dried wakame must first be reconstituted in water, after which dousing it with boiling water and then dipping it in cold water will enhance the color and texture. Instant wakame can be used straight from the package in soups and simmered dishes. Nutrition Wakame seaweed is rich in iodine and calcium, and minerals such as iron