Finely chop the onion and green onion.
Add sesame oil to an earthenware pot and stir-fry the onion, green onion, and minced garlic.
Add red pepper powder and sauté lightly.
Pour in anchovy broth or water.
When it comes to a boil, add the soft tofu and gently break it up.
Season with soy sauce and salt to taste.
Add an egg and cover the lid to cook it soft-boiled.
Optionally add Cheongyang chili pepper or kimchi to taste.