Soak the dried seaweed in cold water.
Cut the beef into bite-sized pieces and season it.
Heat sesame oil in a pot and stir-fry the beef.
Add the soaked seaweed and stir-fry together.
Pour in water and bring to a boil.
Season with soup soy sauce and salt.
Once it boils, reduce the heat and simmer for about 10 more minutes.