Cut tofu and vegetables into bite-sized pieces.
Add sesame oil to a pot and stir-fry minced garlic.
Add zucchini, onion, and shiitake mushrooms and sauté.
Add soybean paste and water, stirring well.
When the broth boils, add soft tofu.
Add chili pepper and green onion, then simmer a bit more.
Season with salt and pepper.