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