Cut tofu and vegetables into bite-sized pieces.
Add cooking oil to a pot and sauté minced garlic and onions.
Add chili powder, chopped green onions, soy sauce, and salt and stir-fry.
Pour in water or broth and bring to a boil.
Add tofu, mushrooms, zucchini, and simmer for a while.
Add spicy chili peppers and black pepper to taste, then finish.