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Green laver (/ /,), known as aonori (アオノリ; 青海苔) in Japan, sea cabbage (海白菜) or hutai (滸苔) in China, and parae (파래) in Korean, is a type of edible green seaweed, including species from the genera Monostroma and Ulva (Ulva prolifera, Ulva pertusa, Ulva intestinalis). It is commercially cultivated in some bay areas in Japan, Korea, and Taiwan, such as Ise Bay. It is rich in minerals such as calcium, magnesium, lithium, vitamins, and amino acids such as methionine. It is also called aosa (アオサ, Ulva pertusa) in some places in Japan.
Similar edible seaweeds, with indigenous names translated as "laver", are found in many other countries around the world. Porphyra umbilicalis, a red seaweed, is harvested from the coasts of Scotland, Wales and Ireland. (See laverbread.) In Hawaii, "the species Porphyra atropurpurea is considered a great delicacy, called Limu luau".
It is used in its dried form for Japanese soups, tempura, and material for manufacturing dried nori and tsukudani and rice. It is also used in a powdered form, often blended with Ulva species of Ulvaceae as its production is limited.
It is used commonly for flavouring of some Japanese foods, usually by sprinkling the powder on the hot food, for its aroma:
- Fried noodles (yakisoba or yakiudon)
- Okonomiyaki (Japanese pancake)
- Takoyaki (octopus dumpling ball)
- Isobe age
- Isobe mochi
- Shichimi (seven-spice seasoning)
- Japanese potato chips
- "About 'aosanori'". isekanbutsu. Archived from the original on 14 May 2017. Retrieved 25 May 2017.
- "Laver Seaweed – A Foraging Guide to Its Food, Medicine and Other Uses". eatweeds.co.uk. 30 August 2018. Archived from the original on 21 January 2021. Retrieved 22 March 2021.
- Media related to Green laver at Wikimedia Commons
- Seaweeds used as human food
- Mystery Seaweed and Aonori