Soak the dried seaweed in a bowl of water until softened. Rinse thoroughly 2-3 times to remove any fishy smell. Squeeze out excess water and set aside.

Prepare the beef by patting it dry with a paper towel. Cut the tofu into bite-sized pieces.

Heat a pot over medium heat. Add beef, sesame oil, and minced garlic. Stir-fry until the beef turns brown.

Add the prepared seaweed to the pot, followed by soy sauce. Stir-fry for about 5 minutes to remove excess moisture and reduce fishy taste.

Pour in 1.5L of water and bring to a boil. Add fish sauce and adjust seasoning with additional soy sauce or salt if needed.