Cut potatoes and pork neck into bite-sized pieces.
Prepare green onion, onion, perilla leaves, perilla powder, and dried radish greens.
Blanch the pork neck in boiling water to remove impurities.
In a pot, add pork, dried radish greens, potatoes, and onion, then pour in water.
Make a seasoning sauce with soybean paste, red pepper paste, red pepper flakes, minced garlic, and soy sauce, then add to the pot.
Boil over medium heat until all ingredients are cooked.
Once the potatoes are cooked and the soup gains flavor, add perilla leaves, green onion, and perilla powder, and simmer briefly.
Season with salt and pepper to taste, then serve.