Soak the dried seaweed in cold water for 10 minutes.
Drain the oil from the canned tuna using a strainer.
Heat sesame oil in a pot and sauté the soaked seaweed for about 2 minutes.
Add the tuna and stir-fry together.
Pour in 600ml of water and bring to a boil.
Season with soy sauce and salt to taste.
Once it boils, reduce to medium heat and simmer for an additional 10 minutes.