In a big bowl, soak pork ribs in cold water for 1 hour. Rinse well, drain and set aside.
Soak dry shiitake mushroom in warm water for about 15min. When mushroom is soft to touch, squeeze excess water and slice.
Bring water to boil, enough to submerge the pork ribs. Boil on high heat for 5 min and discard water. Rinse meat again and set aside.
In a large stock pot, bring 9 cups of water to boil. Add to the pot garlic, ginger, pork ribs and boil on high for 20 min with the lid.
Add potato, onion, cabbage, doenjang, miso, hot pepper flake, black pepper, soup soy sauce, mushroom. and boil on high heat with lid for 10-12 min.
Lower the heat to medium and cook for additional 6-7 min.
Add tofu and close the lid. Cook for 3-4 min.
Turn off heat. Add scallion and hot green pepper.
Enjoy with rice!!