Cut zucchini, onion, tofu, Cheongyang chili pepper, and green onion into bite-sized pieces.
Pour 200ml of water into a pot and dissolve 30g of doenjang (soybean paste), then bring to a boil.
Add the vegetables and tofu, then simmer over medium heat.
Stir in chili powder and minced garlic.
Simmer until the broth thickens.