seaweed salt; salt from burning seaweed
Traditional Japanese salt made by burning seaweed and mixing the ashes with seawater, then boiling it down. Often associated with ancient salt-making methods and poetic references.
Seaweed salt is made using an ancient salt-making method.
There are poems about seaweed salt in the Man'yōshū.
Compound of 藻 (mo, 'seaweed') and 塩 (shio, 'salt'), referring to salt produced using seaweed.