Cut pork and kimchi into bite-sized pieces.
Slice onion, green onion, and tofu.
Put pork in a pot and sauté.
Add kimchi and gochugaru (red chili powder) and stir-fry together.
Pour in water and minced garlic, then bring to a boil.
Add onion, green onion, and tofu and boil once more.
Taste and season with salt or soy sauce as needed.