Soak the dried seaweed in cold water for 10 minutes.
Cut the beef into bite-sized pieces.
Add sesame oil to a pot and stir-fry the beef.
Add the soaked seaweed and stir-fry together.
Pour in 500ml of water and bring to a boil.
Season with soy sauce and salt to taste.
Simmer on medium-low heat for 10 more minutes.