Cut the tofu into cubes.
Finely chop the green onion, garlic, and ginger.
Add cooking oil to a pan and stir-fry ground pork.
Add the chopped green onion, garlic, and ginger and stir-fry.
Add chili oil, gochujang (Korean chili paste), and Doubanjiang (spicy bean paste) and stir-fry together.
Add water and soy sauce, and bring to a boil.
Add tofu and simmer over medium heat.
Add starch water to thicken the sauce.
Finish with sesame oil and pepper.