Cut the tofu into cubes.
Mince green onion, garlic, and ginger.
Heat cooking oil in a pan and stir-fry the pork.
Add the green onion, garlic, and ginger, and stir-fry.
Add gochujang (Korean chili paste), chili powder, doubanjiang, and soy sauce, and stir-fry.
Pour in water, add the tofu, and bring to a boil.
Add starch water to thicken the sauce.
Drizzle sesame oil and finish.