Cut tofu, onion, zucchini, potato, and green onion into bite-sized pieces.
Boil broth using anchovies and kelp.
Add potato, zucchini, and onion to the broth and bring to a boil.
Stir in soybean paste and chili paste.
Add tofu and boil once more.
Finish by adding green onion and Cheongyang chili pepper.