Cut tofu, onion, potato, zucchini, green onion, and chili peppers into bite-sized pieces.
Cut pork into bite-sized pieces.
Heat some cooking oil in a pot and stir-fry the pork.
When the meat is cooked, add gochujang and minced garlic and stir-fry together.
Add onion, potato, zucchini, and chili peppers, and continue stir-frying.
Pour in water and bring to a boil.
Add tofu and simmer over medium heat.
Season with soy sauce for soup, salt, and black pepper.
Add green onion and boil once more to finish.