Soak dried seaweed in cold water for about 10 minutes.
Cut the soaked seaweed into bite-sized pieces.
Add sesame oil to a pot and stir-fry the seaweed.
Pour in water and bring to a boil.
Dissolve the doenjang (soybean paste) through a sieve and add it to the pot.
Add minced garlic and simmer for another 5–10 minutes.
Add tofu and green onion, bring to a gentle boil once more.