Finely chop zucchini, potato, onion, and tofu.
Add sesame oil to a pot and sauté zucchini, potato, and onion.
When the vegetables are halfway cooked, add minced garlic and continue to sauté.
Add doenjang (soybean paste) and gochujang (red chili paste), and mix well.
Pour in broth or water and bring to a boil.
Add tofu and let it simmer over medium-low heat until bubbling.
Finish by adding Cheongyang chili pepper and green onion, then simmer a bit more.