Soak seaweed in cold water for 10 minutes.
Cut the soaked seaweed into bite-sized pieces.
Heat sesame oil in a pot and stir-fry beef.
Add seaweed to the beef and stir-fry together.
Pour water and bring to a boil.
Add soybean paste and simmer on low heat for 10 more minutes.
Taste and adjust seasoning with salt or soy sauce if needed.