Cut pork, tofu, onion, green onion, and Cheongyang chili peppers into bite-sized pieces.
Heat cooking oil in a pan and stir-fry the pork.
Once the surface of the pork is cooked, add the onion and green onion and continue stir-frying.
Add gochugaru (Korean red pepper flakes), soy sauce, and minced garlic, stir-frying together to season.
Pour in water or broth and bring to a boil.
When it starts boiling, add tofu and Cheongyang chili peppers, simmering over medium heat.
When the broth has reduced to a stew-like consistency, turn off the heat and it's ready to serve.