Cut the tofu into cubes.
Finely chop zucchini, potato, onion, and shiitake mushrooms.
Blanch the tofu in boiling water and drain.
Pour anchovy-kelp broth into a pot and turn on the heat.
Stir in doenjang (fermented soybean paste) and gochujang (Korean chili paste).
Add the prepared vegetables and tofu, then bring to a boil.
Add minced garlic, Cheongyang chili, and green onion; simmer for another moment.