Clean and prepare the soybean sprouts and pork.
Place the soybean sprouts and pork into a ttukbaegi (Korean earthenware pot).
Slice the garlic, green onion, and onion thinly.
Add the prepared ingredients, then pour broth or water into the ttukbaegi.
Season with gochujang (Korean chili paste), gochugaru (red pepper flakes), and soy sauce.
Bring to a boil over high heat, then reduce to medium once it starts boiling.
Simmer until the soybean sprouts are cooked through.
Finish with black pepper and sesame oil right before serving.